CN211911516U - Unmanned aerial vehicle ceiling cleaning device - Google Patents
Unmanned aerial vehicle ceiling cleaning device Download PDFInfo
- Publication number
- CN211911516U CN211911516U CN201922281469.8U CN201922281469U CN211911516U CN 211911516 U CN211911516 U CN 211911516U CN 201922281469 U CN201922281469 U CN 201922281469U CN 211911516 U CN211911516 U CN 211911516U
- Authority
- CN
- China
- Prior art keywords
- cleaning device
- cleaning
- aerial vehicle
- unmanned aerial
- rotor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
- Cleaning In General (AREA)
Abstract
The utility model discloses an unmanned aerial vehicle ceiling cleaning device, which comprises a flying device, a positioning device, a cleaning device, a collecting device and a controller; the flight device comprises a small brushless motor, a rotor wing protection frame, propeller blades, a rotor wing support frame, a device protection shell, an upper cover shell and a support frame; the positioning device comprises a laser radar distance sensor, an ultrasonic sensor and a sensor fixing seat; the cleaning device is used for providing a power source for the soft brush head for cleaning work so as to clean the soft brush head; the collecting device comprises a dust collection air duct, a dust collector, a dust collection box and a collecting switch door and is used for collecting dust; the controller is used for supplying power to the cleaning device, and recovering, processing and sending a control command to enable the cleaning device to complete cleaning work. The utility model discloses a ceiling cleaning device can accomplish the cleaning work to complicated wall, extreme height to have the function that dust was collected.
Description
Technical Field
The utility model relates to an intelligence house technical field, in particular to unmanned aerial vehicle ceiling cleaning device.
Background
In indoor places such as families, hotel lobbies, meeting rooms and the like or large public places with roofs, ceiling cleaning work is quite important and tedious, most of ceiling cleaning work is finished manually at present, workers need to carry a large number of cleaning tools to climb ladders to clean the ceilings, but manual cleaning brings inconvenience, and firstly, the cleaning efficiency is low, and the cleaning area is limited; when a cleaner goes to a cleaning place, the cleaner needs to move the ladder once, the reciprocating ladder transportation consumes time and labor, and the cleaner needs to replace one ladder if the cleaner meets a cleaning height which cannot be reached by the ladder. Secondly, the cleaning work is dangerous, and workers often can have the danger that the center of gravity is too high and unstable and fall off from the ladder when cleaning work is carried out at high altitude. The clean scope of current unmanned aerial vehicle cleaning device is little, and cleaning speed is slow, can not accomplish the worker at a high speed with high efficiency, so, need look for a cleaning device that can solve above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an unmanned aerial vehicle ceiling cleaning device can carry out cleaning work in the high altitude when, has improved efficiency, has enlarged clean region, has reduced the danger of this work simultaneously.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides an unmanned aerial vehicle ceiling cleaning device, includes flying device, positioner, cleaning device and collection device, positioner is the cavity casing, is equipped with laser radar range sensor, ultrasonic sensor, dust absorption wind groove and controller on this positioner, flying device is the same flight rotor of a plurality of, and this flying device sets up around positioner, cleaning device has a plurality of and sets up in positioner's top, is equipped with a plurality of on every cleaning device and cleans the brush head, collection device sets up in positioner's below and communicates with the cavity casing, positioner's below is equipped with the support frame, the controller sets up inside positioner to be connected with flying device, cleaning device electricity.
Furthermore, positioner is columniform hollow shell, and the last bottom surface of this hollow shell is the detachable upper cover plate, and this upper cover plate passes through the screw fixation on positioner, laser radar range sensor sets up in the upper cover plate top, ultrasonic sensor sets up the lateral wall at the survey device surely, and laser radar range sensor's below is equipped with the sensor fixing base, the sensor fixing base with upper cover plate fixed connection.
Furthermore, the lateral wall of positioner is equipped with outwards perpendicular and is provided with the rotor support frame and is connected with the flight device through this rotor support frame.
Further, the flying device includes four the same flight rotors, and every flight rotor includes small-size brushless motor, rotor fender bracket, screw blade, small-size brushless motor's middle part is provided with the main shaft, screw blade fixed connection is on the main shaft, the rotor support frame is located the flight rotor and outwards supports formation frame, the rotor fender bracket is located the outside of rotor support frame and encloses into cylindric shell, the outside and the rotor support frame fixed connection of this shell, small-size brushless motor is located on the rotor fender bracket.
Further, cleaning device is including cleaning brush head, first axis of rotation, reducing gear box, ball bearing, second axis of rotation, driven bevel gear, small-size brushless motor and initiative bevel gear, the upper end of first axis of rotation is connected and is cleaned the brush head, and the other end then is connected with the reducing gear box, ball bearing sets up the below at the reducing gear box, and the below and the driven bevel gear of this ball bearing are connected, the second axis of rotation sets up and makes driven bevel gear and ball bearing rotate in the second axis of rotation in ball bearing's centre, initiative bevel gear and driven bevel gear adaptation, the center pin and the small-size brushless motor of this initiative bevel gear are connected and drive the rotation of initiative bevel gear through small-size brushless motor.
Furthermore, clean the brush head and fix on first pivot, thereby first pivot drives through the reducing gear box and rotates and drive the rotation of cleaning the brush head, should clean the brush head and have a plurality of and integrative the connection by the center to slope upwards setting all around.
Furthermore, the collecting device comprises a dust collecting box, a dust collector, a dust collecting air duct and a collecting opening and closing door, the dust collecting box is connected with the hollow shell of the cleaning device in an installing mode, one end of the dust collecting air duct is fixedly connected with the dust collector, the other end of the dust collecting air duct is connected with the upper cover plate, and the collecting opening and closing door is hinged to the device protective shell.
Further, the controller comprises a battery and a single chip microcomputer, the battery and the single chip microcomputer are both arranged inside the positioning device and electrically connected, and the single chip microcomputer controls the operation of the cleaning device of the flying device through the electrical connection.
The utility model discloses an use above-mentioned technical scheme's beneficial effect to be:
1. the utility model discloses a cleaning device raises the efficiency, enlarges the cleanable region. Ceiling cleaning device is based on unmanned aerial vehicle's cleaning device, benefit from unmanned aerial vehicle's advanced technology and good flight performance, flight stability, unmanned aerial vehicle can reach the high cleaning work that carries out that the cleanup crew can not contact easily, has enlarged can clear work area, makes some be difficult to clear positions also can obtain cleanly, and clean effect is better, can improve clean efficiency, cleaning device's clean efficiency is higher than artifical cleanness far away under the same time.
2. The utility model discloses a cleaning device reduces labour cost. When the clean mode of most ceiling down all is artifical clean, and the degree of difficulty of ceiling cleaning work is far away again, be far away from the degree of difficulty of other cleaning work, the workman needs braces burnisher to keep looking up the gesture for a long time and carries out cleaning work, and is time-consuming and labor-consuming, physical stamina to the cleaner, it has great experience so on this basis the water rise ship height to be had, the expense festival of ceiling cleaning work is climbed, and ceiling cleaning device based on unmanned aerial vehicle can realize that intelligence is clean, clean repeatedly, greatly reduced clear cost, and release the labour flow direction other fields that more need.
3. The utility model discloses a cleaning device reduces incident probability, artifical clean ceiling need rely on equipment such as ladder even rope, just enable cleaner and reach required clear high cleaning work that carries on, in-process using the ladder because the focus is too high, cleaner can take place the incident very easily and fall from the ladder, cleaner need carry a large amount of burnishes when carrying out cleaning work and together scramble the ladder in addition, also the burnishes drops the possibility of hindering the people in the high altitude, and the emergence of this type of accident can be avoided completely to cleaning device based on unmanned aerial vehicle, great reduction the emergence probability of incident.
Drawings
Fig. 1 is a schematic structural view of the ceiling cleaning device based on the unmanned aerial vehicle according to a preferred embodiment of the present invention.
Fig. 2 is a schematic view of the bottom view of the ceiling cleaning device based on the unmanned aerial vehicle according to a preferred embodiment of the present invention.
Fig. 3 is a schematic view of the external structure of the cleaning device of the ceiling cleaning device based on the unmanned aerial vehicle according to a preferred embodiment of the present invention.
Fig. 4 is a schematic view of the internal structure of the ceiling cleaning device based on the unmanned aerial vehicle according to a preferred embodiment of the present invention.
Fig. 5 is a schematic structural view of the flight device of the ceiling cleaning device based on the unmanned aerial vehicle according to a preferred embodiment of the present invention.
Fig. 6 is a schematic view of the internal structure of the cleaning device of the ceiling cleaning device based on the unmanned aerial vehicle according to a preferred embodiment of the present invention.
Fig. 7 is a schematic structural view of the collecting device of the ceiling cleaning device based on the unmanned aerial vehicle according to a preferred embodiment of the present invention.
In the drawing, the flying device 1, the rotor support frame 11, the small brushless motor 12, the rotor protection frame 13, the propeller blade 14, the positioning device 2, the laser radar distance measuring sensor 21, the ultrasonic sensor 22, the dust collection air duct 23, the upper cover plate 24, the sensor fixing base 25, the single chip microcomputer 26, the screw 27, the battery 28, the cleaning device 3, the cleaning brush head 31, the first rotating shaft 32, the reduction box 33, the ball bearing 34, the second rotating shaft 35, the driven bevel gear 36, the small brushless motor 37, the driving bevel gear 38, the collection device 4, the dust collection box 41, the dust collector 42, the dust collection air duct 43, the collection opening and closing door 44, the small motor 45, the support frame 5 and the fixed countersunk screw 6.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is described in further detail. It should be understood, however, that these embodiments are provided so that this disclosure will be thorough and complete, and that many of the details set forth in this specification will be sufficient to provide a thorough understanding of one or more aspects of the present invention, even though these aspects of the invention may be practiced without these specific details.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
As shown in fig. 1 and 2, an unmanned aerial vehicle ceiling cleaning device includes a flying device 1, a positioning device 2, a cleaning device 3 and a collecting device 4, wherein the positioning device 2 is a hollow casing, a laser radar ranging sensor 21, an ultrasonic sensor 22, a dust collection air duct 23 and a controller (not shown in the figure) are arranged on the positioning device 2, the flying device 1 is a plurality of same flying rotors, the flying device 1 is arranged around the positioning device 2, the cleaning device 3 is provided with a plurality of cleaning heads 31 arranged above the positioning device 2, each cleaning device 3 is provided with a plurality of cleaning heads 31, the collecting device 4 is arranged below the positioning device 2 and communicated with the hollow casing, a support frame 5 is arranged below the positioning device 2, and the controller is arranged inside the positioning device 2 and electrically connected with the flying device 1 and the cleaning device 3 to control the flying device 1, the cleaning device 3, The cleaning device 3 operates.
As shown in fig. 3 and 4, the positioning device 2 is a cylindrical hollow casing, the upper bottom surface of the hollow casing is a detachable upper cover plate 24, the lower bottom surface of the hollow casing is sealed, a fixing countersunk screw 6 is arranged in the middle of the hollow casing, the middle part of the fixing countersunk screw 6 is hollow, a dust suction air duct 43 in the collecting device is arranged above the hollow casing, the dust suction air duct 43 is communicated with the fixing countersunk screw 6 at the bottom and is communicated with a dust collection box 41 below the positioning device, the upper cover plate 24 is fixed on the positioning device 2 through a screw 27, the laser radar ranging sensor 21 is arranged above the upper cover plate 24, the ultrasonic sensor 22 is arranged on the side wall of the measuring device, a sensor fixing seat 25 is arranged below the laser radar ranging sensor 21, the sensor fixing seat 25 is fixedly connected with the upper cover plate 24, a single chip microcomputer 26 is arranged in the controller, the single chip microcomputer 26 is arranged in the positioning device 2; the side wall of the positioning device 2 is provided with a rotor wing support frame 11 which is vertically arranged outwards and is connected with the flying device 1 through the rotor wing support frame 11.
As shown in fig. 5, the flying device 1 includes four identical flying rotors, each flying rotor includes a small brushless motor 12, a rotor fender bracket 13, and a rotor blade 14, the middle part of the small brushless motor 12 is provided with a main shaft, the rotor blade 14 is fixedly connected to the main shaft, the rotor support bracket 11 is located in the flying rotor and outwards supports to form a frame, the rotor fender bracket 13 is located in the outer side of the rotor support bracket 11 and encloses a cylindrical housing, the outer part of the housing is fixedly connected with the rotor support bracket 11, and the small brushless motor 12 is located on the rotor fender bracket 13.
As shown in fig. 6, the cleaning device 3 includes a cleaning brush head 31, a first rotating shaft 32, a reduction box 33, a ball bearing 34, a second rotating shaft 35, a driven bevel gear 36, a small brushless motor 37 and a driving bevel gear 38, the upper end of the first rotating shaft 32 is connected with the cleaning brush head 31, the other end is connected with the reduction box 33, the ball bearing 34 is arranged below the reduction box 33, the lower part of the ball bearing 34 is connected with the driven bevel gear 36, the second rotating shaft 35 is arranged in the middle of the ball bearing 34, so that the driven bevel gear 36 and the ball bearing 34 can rotate on the second rotating shaft 35, the driving bevel gear 38 is matched with the driven bevel gear 36, the central shaft of the driving bevel gear 38 is connected with the small brushless motor 37 and drives the driving bevel gear 38 to rotate through the small brushless motor 37, the cleaning device has three cleaning brush heads, four brushes in different directions are obliquely and upwards arranged on each cleaning brush head.
As shown in fig. 7, the cleaning brush head 31 is fixed on a first rotating shaft 32, the first rotating shaft 32 is driven by a reduction box 33 to rotate so as to drive the cleaning brush head 31 to rotate, and a plurality of cleaning brush heads 31 are integrally connected and are arranged from the center to the periphery in an inclined and upward manner.
As shown in fig. 7, the collecting device 4 includes a dust collecting box 41, a dust collector 42, a dust collecting duct 43 and a collecting opening and closing door 44, the dust collecting box 41 is installed and connected with the hollow casing of the cleaning device, one end of the dust collecting duct is fixedly connected with the dust collector, the other end of the dust collecting duct is connected with the upper cover plate, the collecting opening and closing door is hinged to the device protecting casing, a small brushless motor 45 is arranged in the collecting device 4, the small brushless motor 45 is connected with a controller, and the rotation of the collecting opening and closing door is controlled to realize opening and closing.
The controller includes battery 28 and singlechip 26, battery 28 and singlechip 26 all set up inside positioner 2 and electricity and connect, but singlechip 26 controls the operation of the device that can clean of flying device through the electricity connection, and the battery is 18000mAh battery, and singlechip 26 is the STM32 singlechip.
Working principle; the cleaning device is provided with a remote controller in a matching way, and drives the small brushless motor 12 to make the propeller blades do fixed-axis rotation motion and take off through a Bluetooth module on a remote control driving single chip microcomputer. After the cleaning device takes off, the distance is measured through the laser radar ranging sensor 21 and the ultrasonic sensor 22 to perform aerial positioning and information is fed back to the remote controller so as to be judged manually, after the cleaning device is determined to reach a working area, a feedback signal is sent to the single chip microcomputer to drive the small brushless motor 37, the small brushless motor 37 drives the driving bevel gear 38 to rotate, the driving bevel gear 38 rotates to drive the driven bevel gear 36 to rotate, the driven bevel gear 36 drives the second rotating shaft 35 to rotate, the second rotating shaft 35 is decelerated through the reduction gearbox 33 and then drives the first rotating shaft 32 to rotate, so that the cleaning brush head 31 is driven to rotate, the cleaning brush head 31 starts cleaning work in the working area, meanwhile, the dust collector 42 is opened to suck dust from the dust collecting air duct 43, the dust is collected in the dust collecting box 41, and the cleaning device is controlled to.
After the cleaning device finishes cleaning work, the cleaning device is controlled to descend to the ground through the remote controller, and power is cut off. The collection port opening and closing door 44 outside the dust collection box 41 is opened, the dust collection box 41 is taken out, the dust in the box is treated and then is put into the cleaning device again, and the collection port opening and closing door is closed.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The utility model provides an unmanned aerial vehicle ceiling cleaning device which characterized in that: including flight device, positioner, cleaning device and collection device, positioner is the cavity casing, is equipped with laser radar range sensor, ultrasonic sensor, dust absorption wind groove and controller on this positioner, flight device is the same flight rotor of a plurality of, and this flight device sets up around positioner, cleaning device has a plurality of and sets up in positioner's top, is equipped with a plurality of on every cleaning device and cleans the brush head, collection device sets up in positioner's below and communicates with the cavity casing, positioner's below is equipped with the support frame, the controller sets up inside positioner to be connected with flight device, cleaning device electricity.
2. The unmanned aerial vehicle ceiling cleaning device of claim 1, wherein: the positioning device is a cylindrical hollow shell, the upper bottom surface of the hollow shell is a detachable upper cover plate, the upper cover plate is fixed on the positioning device through screws, the laser radar ranging sensor is arranged above the upper cover plate, the ultrasonic sensor is arranged on the side wall of the fixed measurement device, a sensor fixing seat is arranged below the laser radar ranging sensor, and the sensor fixing seat is fixedly connected with the upper cover plate.
3. The unmanned aerial vehicle ceiling cleaning device of claim 2, wherein: the lateral wall of the positioning device is provided with a rotor wing support frame which is vertically arranged outwards and is connected with the flying device through the rotor wing support frame.
4. The unmanned aerial vehicle ceiling cleaning device of claim 3, wherein: flight device includes four the same flight rotors, and every flight rotor includes small-size brushless motor, rotor fender bracket, screw blade, small-size brushless motor's middle part is provided with the main shaft, screw blade fixed connection is on the main shaft, the rotor support frame is located the flight rotor and outwards supports formation frame, the rotor fender bracket is located the outside of rotor support frame and encloses into cylindric shell, the outside and the rotor support frame fixed connection of this shell, small-size brushless motor is located on the rotor fender bracket.
5. The unmanned aerial vehicle ceiling cleaning device of claim 1, wherein: the cleaning device comprises a cleaning brush head, a first rotating shaft, a reduction gearbox, a ball bearing, a second rotating shaft, a driven bevel gear, a small brushless motor and a driving bevel gear, wherein the cleaning brush head is connected to the upper end of the first rotating shaft, the other end of the first rotating shaft is connected with the reduction gearbox, the ball bearing is arranged below the reduction gearbox, the lower side of the ball bearing is connected with the driven bevel gear, the second rotating shaft is arranged in the middle of the ball bearing, so that the driven bevel gear and the ball bearing can rotate on the second rotating shaft, the driving bevel gear is matched with the driven bevel gear, and the central shaft of the driving bevel gear is connected with the small brushless motor and drives the driving bevel gear to rotate through the small brushless motor.
6. The unmanned aerial vehicle ceiling cleaning device of claim 5, wherein: the cleaning brush head is fixed on a first rotating shaft, the first rotating shaft is driven to rotate through a reduction gearbox so as to drive the cleaning brush head to rotate, and the cleaning brush head is provided with a plurality of cleaning brush heads which are integrally connected and are arranged from the center to the periphery in an inclined and upward mode.
7. The unmanned aerial vehicle ceiling cleaning device of claim 2, wherein: the collecting device comprises a dust collecting box, a dust collector, a dust collecting air duct and a collecting opening and closing door, the dust collecting box is installed and connected with the hollow shell of the cleaning device, one end of the dust collecting air duct is fixedly connected with the dust collector, the other end of the dust collecting air duct is connected with the upper cover plate, and the collecting opening and closing door is hinged with the hollow shell of the cleaning device.
8. The unmanned aerial vehicle ceiling cleaning device of claim 1, wherein: the controller comprises a battery and a single chip microcomputer, the battery and the single chip microcomputer are both arranged in the positioning device and electrically connected, and the single chip microcomputer controls the operation of the cleaning device of the flying device through the electrical connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922281469.8U CN211911516U (en) | 2019-12-18 | 2019-12-18 | Unmanned aerial vehicle ceiling cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922281469.8U CN211911516U (en) | 2019-12-18 | 2019-12-18 | Unmanned aerial vehicle ceiling cleaning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211911516U true CN211911516U (en) | 2020-11-13 |
Family
ID=73325223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922281469.8U Expired - Fee Related CN211911516U (en) | 2019-12-18 | 2019-12-18 | Unmanned aerial vehicle ceiling cleaning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211911516U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114604392A (en) * | 2022-02-25 | 2022-06-10 | 江苏科技大学 | Unmanned aerial vehicle device and method for ship body health diagnosis and repair |
-
2019
- 2019-12-18 CN CN201922281469.8U patent/CN211911516U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114604392A (en) * | 2022-02-25 | 2022-06-10 | 江苏科技大学 | Unmanned aerial vehicle device and method for ship body health diagnosis and repair |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11192648B1 (en) | Air blowing drone and dust cleaning device for solar panels | |
| CN110374812B (en) | Safe and reliable wind driven generator for power transmission system | |
| CN211911516U (en) | Unmanned aerial vehicle ceiling cleaning device | |
| KR20130039111A (en) | Automatic system of louver using solar | |
| CN210918809U (en) | Dust device based on door and window purification technology | |
| CN214959786U (en) | Camera with quick deashing | |
| CN108858824B (en) | Full-automatic hydroelectric grooving machine for wall top grooving | |
| CN110946527A (en) | Unmanned aerial vehicle ceiling cleaning device | |
| CN210522080U (en) | Dust absorbing device is used in cable material processing production | |
| CN114268724B (en) | Be applied to camera device in outdoor area | |
| CN114754440B (en) | Ventilating energy-saving structure of green building | |
| CN207970052U (en) | A kind of high building outdoor glass swab | |
| CN107997687A (en) | A kind of supporting structure of sweeping robot detection device | |
| CN209189416U (en) | It is a kind of for cleaning the mechanical device of blade of wind-driven generator | |
| CN218268344U (en) | Remote data monitoring device for wind power generation equipment | |
| CN219189611U (en) | Wall surface grinding equipment for interior wall painting | |
| CN220727776U (en) | Electric power monitoring device | |
| CN216611598U (en) | Many rotor unmanned aerial vehicle's paddle fixed knot constructs | |
| CN214307431U (en) | Energy-conserving ventilation unit for architectural design | |
| CN211146323U (en) | New forms of energy scene complementation street lamp | |
| CN213155635U (en) | Fixed window cleaning robot | |
| CN218354340U (en) | Novel bird is driven to electric power transmission line shaft tower device | |
| CN219420661U (en) | Rotary driving type solar photovoltaic panel | |
| CN220340429U (en) | Novel meteorological sensor | |
| CN209663860U (en) | A kind of monitoring camera automatic cleaning brush |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201113 Termination date: 20211218 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |