CN111816008A - Three-dimensional portable embedded system development teaching instrument - Google Patents
Three-dimensional portable embedded system development teaching instrument Download PDFInfo
- Publication number
- CN111816008A CN111816008A CN202010717701.2A CN202010717701A CN111816008A CN 111816008 A CN111816008 A CN 111816008A CN 202010717701 A CN202010717701 A CN 202010717701A CN 111816008 A CN111816008 A CN 111816008A
- Authority
- CN
- China
- Prior art keywords
- rod
- embedded system
- teaching instrument
- system development
- box body
- 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.)
- Withdrawn
Links
- 230000033772 system development Effects 0.000 title claims abstract description 17
- 230000003028 elevating effect Effects 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 description 4
- 244000309464 bull Species 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B5/00—Electrically-operated educational appliances
- G09B5/02—Electrically-operated educational appliances with visual presentation of the material to be studied, e.g. using film strip
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
- F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/18—Heads with mechanism for moving the apparatus relatively to the stand
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Business, Economics & Management (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Overhead Projectors And Projection Screens (AREA)
Abstract
The invention discloses a three-dimensional portable embedded system development teaching instrument, which comprises a box body, wherein a lifting device is arranged in the box body, the lifting device is connected with a projection screen, a moving block is slidably arranged on the bottom surface in the box body, a first sliding groove is formed in the moving block, a first sliding block is slidably arranged in the first sliding groove, the first sliding block is fixedly connected with a connecting seat, the upper end of the connecting seat is provided with a connecting rod, the top end of the connecting rod is provided with a rotating shaft, and the rotating shaft is rotatably connected with a projector; through setting up the box, install projection screen and projecting apparatus in the box, can conveniently carry this teaching instrument, improve the portability of this instrument.
Description
Technical Field
The invention relates to the field of teaching instruments, in particular to a three-dimensional portable embedded system development teaching instrument.
Background
In modern teaching process, the computer is indispensable as the teaching equipment of commonly used, in order to let the student see the content on the computer, generally will cooperate the projecting apparatus to show the content on the computer to be more convenient for carry out the teaching.
And the projecting apparatus that uses in the teaching generally installs in the middle of the multimedia classroom, is not convenient for remove for the classroom that does not have the projecting apparatus carries out computer teaching just very trouble, and when the projecting apparatus was installed on mobilizable device, the projecting apparatus was adjusted comparatively trouble.
Disclosure of Invention
The invention aims to provide a three-dimensional portable embedded system development teaching instrument to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a three-dimensional portable embedded system development teaching instrument, includes the box, be provided with elevating gear in the box, elevating gear is connected with the projection screen, the inside bottom surface slidable mounting of box has the movable block, is provided with spout one on the movable block, and slidable mounting has slider one in the spout one, and a slider fixedly connected with connecting seat, connecting seat upper end are provided with the connecting rod, and the connecting rod top is provided with the pivot, and the pivot is rotated and is connected with the projecting apparatus.
As a further scheme of the invention: the lifting device comprises a motor, the motor is fixedly connected to the right side wall of the box body, the shaft rod is fixedly connected to the output end of the motor, the shaft rod extends into the box body, the tail end of the screw rod is connected to the inner side wall of the box body in a rotating mode, sliding seats are respectively slidably mounted at the left end and the right end of the screw rod, a first hinge shaft is arranged at the upper end of each sliding seat, a hinge rod is rotatably connected to one hinge shaft, a fixing plate is arranged above the screw rod, the lower end of the fixing plate is provided with a second hinge shaft, the tail end of the hinge rod is hinged to.
As a still further scheme of the invention: the screw rod is made of stainless steel.
As a still further scheme of the invention: the bottom surface in the box body is provided with a second sliding groove, a second sliding block is arranged in the second sliding groove and fixedly connected with a moving block, and a rotating rod is arranged on the side wall of the box body and rotatably connected with a box door.
As a still further scheme of the invention: the box upper end can be dismantled and be connected with the case lid, and the case lid upper end is provided with the handle.
As a still further scheme of the invention: the right end of the moving block is provided with a convex block, the convex block is in threaded connection with a lead screw, the upper end of the lead screw is fixedly connected with a handle, and the lower end of the lead screw is rotatably connected with a bottom pad.
As a still further scheme of the invention: the bottom pad is made of rubber.
Compared with the prior art, the invention has the beneficial effects that: by arranging the box body, the projection screen and the projector are arranged in the box body, so that the teaching instrument can be conveniently carried, and the portability of the instrument is improved; the motor is arranged to drive the screw rods to rotate, so that the sliding seats move oppositely, the fixed plate drives the projection screen to move upwards under the action of the hinge rod, and the projection screen can move downwards by reversing the motor, so that the projection screen can be lifted; through the arrangement of the second sliding block, the box door rotates around the rotating rod and is opened, the second sliding block slides outwards in the second sliding groove, and the moving block slides out of the box body, so that the distance between the projection screen and the projector can be increased, and the projector can be enabled to completely project in the projection screen; the projection screen and the projector in the box body can be protected by arranging the box cover, so that the projection screen and the projector are prevented from being damaged; through setting up the heelpiece, when needs fix the movable block, rotate the lead screw through the handle, make the heelpiece move down and contact ground, increase the frictional force with ground, and then fix the movable block, prevent that it from rocking from causing the influence to the projecting apparatus.
Drawings
Fig. 1 is a schematic structural diagram of a three-dimensional portable embedded system development teaching instrument.
Fig. 2 is a schematic diagram of a part of a structure of a three-dimensional portable embedded system development teaching instrument.
Fig. 3 is a side sectional view of a three-dimensional portable embedded system development instructional apparatus.
In the figure: 1-box body, 2-projection screen, 3-moving block, 4-chute I, 5-slide block I, 6-connecting seat, 7-connecting rod, 8-rotating shaft, 9-projector, 10-motor, 11-shaft rod, 12-screw rod, 13-sliding seat, 14-hinge shaft I, 15-hinge rod, 16-hinge shaft II, 17-fixing plate, 18-supporting rod, 19-chute II, 20-slide block II, 21-rotating rod, 22-box door, 23-box cover, 24-handle, 25-lug, 26-screw rod, 27-handle and 28-base cushion.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-3, in the embodiment of the present invention, a three-dimensional portable embedded system development teaching instrument includes a box 1, a lifting device is disposed in the box 1, the lifting device is connected to a projection screen 2, a moving block 3 is slidably mounted on an inner bottom surface of the box 1, a sliding block 4 is disposed on the moving block 3, a sliding block 5 is slidably mounted in the sliding block 4, the sliding block 5 is fixedly connected to a connecting seat 6, a connecting rod 7 is disposed at an upper end of the connecting seat 6, a rotating shaft 8 is disposed at a top end of the connecting rod 7, the rotating shaft 8 is rotatably connected to a projector 9, when the teaching instrument needs to be used, the projection screen 2 can be adjusted to a proper height by the lifting device, the sliding block 5 slides in the sliding block 4, a distance between the projector 9 and the projection screen 2 is adjusted, and then the projector 9 is rotated around the rotating shaft 8 to, the convenience is taught, through installing projection screen 2 and projecting apparatus 9 in box 1, can conveniently carry this teaching instrument, improves the portability of this instrument.
The lifting device comprises a motor 10, the motor 10 is fixedly connected to the right side wall of the box body 1, the output end of the motor 10 is fixedly connected with a shaft rod 11, the shaft rod 11 extends into the box body 1, the tail end of the shaft rod 12 is fixedly connected with a screw rod 12, the tail end of the screw rod 12 is rotatably connected to the inner side wall of the box body 1, slide seats 13 are respectively and slidably installed at the left end and the right end of the screw rod 12, a first hinge shaft 14 is arranged at the upper end of each slide seat 13, a first hinge shaft 14 is rotatably connected with a hinge rod 15, a fixing plate 17 is arranged above the screw rod 12, a second hinge shaft 16 is arranged at the lower end of the fixing plate 17, the tail end of the hinge rod 15 is hinged with the second hinge shaft 16, a support rod 18 is arranged at the upper end of the fixing plate 17, the, the motor 10 is reversed, so that the projection screen 2 can move downwards, and the projection screen 2 can be lifted; the material of the screw 12 is not limited, and in the present embodiment, the material of the screw 12 is preferably stainless steel.
The inside bottom surface of box 1 is provided with spout two 19, and slidable mounting has slider two 20 in spout two 19, and slider two 20 and movable block 3 fixed connection, be provided with bull stick 21 on the box 1 lateral wall, bull stick 21 rotates and is connected with chamber door 22, and through rotating chamber door 22 around bull stick 21, open it, make slider two 20 outwards slide in spout two 19, make movable block 3 roll-off outside box 1, can increase the distance between projection screen 2 and the projecting apparatus 9, guarantee that projecting apparatus 9 can be complete carry out the projection in projection screen 2.
The upper end of the box body 1 is detachably connected with a box cover 23, a handle 24 is arranged at the upper end of the box cover 23, the projection screen 2 and the projector 9 in the box body can be protected through the box cover 23, the projection screen is prevented from being damaged, when the instrument is required to be transported, the handle 24 can be taken out, the instrument is convenient to move, and convenience of the instrument is improved.
The working principle of the embodiment is as follows: when the teaching instrument needs to be used, the motor 10 is started to drive the screw rod 12 to rotate, the sliding seats 13 move oppositely, the fixing plate 17 drives the projection screen 2 to move upwards under the action of the hinge rod 15, the box door 22 rotates around the rotating rod 21 to be opened, the sliding blocks 20 slide outwards in the sliding grooves 19, the moving block 3 slides out of the box body 1, the sliding blocks 5 slide in the sliding grooves 4, the distance between the projector 9 and the projection screen 2 is adjusted, then the projector 9 rotates around the rotating shaft 8, the angle of the projector is adjusted, the projector can normally project on the projection screen 2, teaching is facilitated, when the teaching instrument does not need to be used, the projector 9 and the projection screen 2 are retracted into the box body 1, the box cover 23 is covered, the instrument is lifted through the handle 24, the teaching instrument is convenient to move, and the portability of the teaching instrument is improved.
Example 2
In order to fix the moving block 3, the present embodiment is further improved on the basis of embodiment 1, and the improvement is as follows: a convex block 25 is arranged at the right end of the moving block 3, a lead screw 26 is connected to the convex block 25 in a threaded manner, a handle 27 is fixedly connected to the upper end of the lead screw 26, a bottom pad 28 is rotatably connected to the lower end of the lead screw 26, when the moving block 3 needs to be fixed, the lead screw 26 is rotated through the handle 27, the bottom pad 28 is enabled to move downwards to be in contact with the ground, the friction force between the bottom pad and the ground is increased, the moving block 3 is further fixed, and the influence of the shaking on the projector 9 is; the material of the bottom pad 28 is not limited, and in the present embodiment, the material of the bottom pad 28 is preferably rubber.
The working principle of the embodiment is as follows: in order to fix the moving block 3, a convex block 25 is arranged at the right end of the moving block 3, a lead screw 26 is connected to the convex block 25 in a threaded manner, a handle 27 is fixedly connected to the upper end of the lead screw 26, a bottom pad 28 is rotatably connected to the lower end of the lead screw 26, and when the moving block 3 needs to be fixed, the lead screw 26 is rotated through the handle 27, so that the bottom pad 28 moves downwards to contact the ground, the friction force between the bottom pad and the ground is increased, the moving block 3 is further fixed, and the influence on the projector 9 caused by the shaking of the moving.
In summary, by arranging the box body 1 and installing the projection screen 2 and the projector 9 in the box body 1, the teaching instrument can be conveniently carried, and the portability of the teaching instrument is improved; the motor 10 is arranged to drive the screw 12 to rotate, so that the sliding seats 13 move oppositely, the fixing plate 17 drives the projection screen 2 to move upwards under the action of the hinge rod 15, and the motor 10 is reversed to enable the projection screen 2 to move downwards, so that the projection screen 2 is lifted; through the arrangement of the second sliding block 20, the box door 22 rotates around the rotating rod 21 and is opened, the second sliding block 20 slides outwards in the second sliding groove 19, the moving block 3 slides out of the box body 1, the distance between the projection screen 2 and the projector 9 can be increased, and the projector 9 can be ensured to be capable of projecting in the projection screen 2 completely; the projection screen 2 and the projector 9 in the box body can be protected by arranging the box cover 23, so that the instruments are prevented from being damaged, and when the instruments need to be transported, the instruments can be taken out through the handle 24, so that the instruments are convenient to move, and the convenience of the instruments is improved; through setting up the heelpiece 28, when needs fix the movable block 3, rotate lead screw 26 through handle 27, make heelpiece 28 move down and contact ground, increase the frictional force with ground, and then fix movable block 3, prevent that it from rocking and cause the influence to projecting apparatus 9.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. The utility model provides a three-dimensional portable embedded system development teaching instrument, includes box (1), its characterized in that, be provided with elevating gear in box (1), elevating gear is connected with projection screen (2), box (1) inside bottom surface slidable mounting has movable block (3), is provided with spout (4) on movable block (3), and slidable mounting has slider (5) in spout (4), slider (5) fixedly connected with connecting seat (6), and connecting seat (6) upper end is provided with connecting rod (7), and connecting rod (7) top is provided with pivot (8), and pivot (8) rotate and are connected with projecting apparatus (9).
2. The stereoscopic portable embedded system development teaching instrument according to claim 1, wherein the lifting device comprises a motor (10), the motor (10) is fixedly connected to the right side wall of the box body (1), the output end of the motor (10) is fixedly connected with a shaft rod (11), the shaft rod (11) extends into the box body (1) and is fixedly connected with a screw rod (12) at the end, the end of the screw rod (12) is rotatably connected to the inner side wall of the box body (1), sliding seats (13) are respectively slidably mounted at the left end and the right end of the screw rod (12), a first hinge shaft (14) is arranged at the upper end of the sliding seat (13), a first hinge shaft (14) is rotatably connected with a hinge rod (15), a fixing plate (17) is arranged above the screw rod (12), a second hinge shaft (16) is arranged at the lower end of the fixing plate (17), the upper end of the fixing plate (17) is provided with a support rod (18), and the top end of the support rod (18) is fixedly connected with the projection screen (2).
3. The stereoscopic portable embedded system development teaching instrument according to claim 2, wherein the screw (12) is made of stainless steel.
4. The stereoscopic portable embedded system development teaching instrument according to claim 1, wherein a second sliding groove (19) is arranged on the bottom surface inside the box body (1), a second sliding block (20) is slidably mounted in the second sliding groove (19), the second sliding block (20) is fixedly connected with the moving block (3), a rotating rod (21) is arranged on the side wall of the box body (1), and the rotating rod (21) is rotatably connected with a box door (22).
5. The stereoscopic portable embedded system development teaching instrument according to claim 1, wherein a case cover (23) is detachably connected to the upper end of the case body (1), and a handle (24) is arranged on the upper end of the case cover (23).
6. The stereoscopic portable embedded system development teaching instrument according to claim 1, wherein the right end of the moving block (3) is provided with a projection (25), the projection (25) is connected with a lead screw (26) in a threaded manner, the upper end of the lead screw (26) is fixedly connected with a handle (27), and the lower end of the lead screw (26) is rotatably connected with a base pad (28).
7. The stereoscopic portable embedded system development teaching instrument according to claim 6, wherein the bottom pad (28) is made of rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010717701.2A CN111816008A (en) | 2020-07-23 | 2020-07-23 | Three-dimensional portable embedded system development teaching instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010717701.2A CN111816008A (en) | 2020-07-23 | 2020-07-23 | Three-dimensional portable embedded system development teaching instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111816008A true CN111816008A (en) | 2020-10-23 |
Family
ID=72862491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010717701.2A Withdrawn CN111816008A (en) | 2020-07-23 | 2020-07-23 | Three-dimensional portable embedded system development teaching instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111816008A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112856121A (en) * | 2020-12-30 | 2021-05-28 | 广户联(广州)教育科技有限公司 | Screen circumference elevating gear for education platform |
| CN113992899A (en) * | 2021-10-21 | 2022-01-28 | 浙江科比特科技有限公司 | Unmanned aerial vehicle passes back image composite graph equipment in real time |
| CN114319949A (en) * | 2021-12-23 | 2022-04-12 | 德马吉国际展览有限公司 | Online 3D panoramic all-round visual virtual exhibition hall of digit |
-
2020
- 2020-07-23 CN CN202010717701.2A patent/CN111816008A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112856121A (en) * | 2020-12-30 | 2021-05-28 | 广户联(广州)教育科技有限公司 | Screen circumference elevating gear for education platform |
| CN113992899A (en) * | 2021-10-21 | 2022-01-28 | 浙江科比特科技有限公司 | Unmanned aerial vehicle passes back image composite graph equipment in real time |
| CN114319949A (en) * | 2021-12-23 | 2022-04-12 | 德马吉国际展览有限公司 | Online 3D panoramic all-round visual virtual exhibition hall of digit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111816008A (en) | Three-dimensional portable embedded system development teaching instrument | |
| CN106205224B (en) | A kind of rotatable integration projector structure of long range for dais of imparting knowledge to students | |
| CN209469980U (en) | A kind of spatial digitizer lifting device | |
| CN212084507U (en) | Novel linkage lift sand table | |
| CN109043822B (en) | Teaching platform with hidden projector | |
| CN208639826U (en) | The Electronic platform of Students' Innovation career course multimedia presentation | |
| CN103615635B (en) | Liquid crystal display panel lifting integrated machine | |
| CN203941622U (en) | A kind of box multimedia teaching apparatus | |
| CN210911785U (en) | Teaching panel for classroom learning | |
| CN211694101U (en) | Geometric projection device for advanced math teaching | |
| CN212878291U (en) | Novel experimental apparatus of education technique | |
| CN210662072U (en) | Multi-angle projection arrangement for visual design | |
| CN213183169U (en) | Interactive teaching practical training platform based on big data | |
| CN212960621U (en) | Projecting apparatus support for education | |
| CN211582089U (en) | Desk capable of being matched with tablet computer in sliding mode | |
| CN211181326U (en) | Novel slider demonstration for teaching device | |
| CN218682830U (en) | Auxiliary stand for animation production instrument | |
| CN206497581U (en) | A kind of rotatable projection arrangement of long range for dais of imparting knowledge to students | |
| CN219125655U (en) | Adjustable platform structure | |
| CN214873958U (en) | Animation design support frame convenient to go up and down | |
| CN218273782U (en) | Portable teaching sand table | |
| CN218975037U (en) | Portable handwriting copying table | |
| CN216248744U (en) | Projection arrangement of height-adjusting of being convenient for that online education was used | |
| CN214312091U (en) | Full touch screen admire class preparation platform | |
| CN220937520U (en) | Building engineering construction demonstration device based on BIM technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20201023 |
|
| WW01 | Invention patent application withdrawn after publication |