CN112497086A - Tubular steel plugging device - Google Patents
Tubular steel plugging device Download PDFInfo
- Publication number
- CN112497086A CN112497086A CN202011182384.5A CN202011182384A CN112497086A CN 112497086 A CN112497086 A CN 112497086A CN 202011182384 A CN202011182384 A CN 202011182384A CN 112497086 A CN112497086 A CN 112497086A
- Authority
- CN
- China
- Prior art keywords
- tubular steel
- plugging
- sliding groove
- block
- steel
- 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.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
Abstract
The invention provides a tubular steel blocking device, which belongs to the technical field of tubular steel sand blasting and comprises a baffle, a blocking block and a second adsorption piece, wherein the baffle is used for shielding the end part of the tubular steel; the blocking block is arranged on the baffle and extends into the tubular steel; the second adsorption piece is arranged on the blocking block and used for fixing at least one side surface of the blocking block with the inner wall of the tubular steel. The tubular steel plugging device provided by the invention solves the problems that steel grit is sprayed into tubular steel from two ends of the tubular steel in the prior art, the field operation is influenced, and potential safety hazards exist.
Description
Technical Field
The invention belongs to the technical field of sand blasting of tubular steel, and particularly relates to a tubular steel plugging device.
Background
In the process of sand blasting construction of tubular steel, steel grit easily enters the pipe body from two ends of the tubular steel, and after the sand blasting is finished, the steel grit continuously flows out from two ends of the tubular steel in the processes of hoisting and subsequent processing of the tubular steel, so that the field operation environment is influenced, and potential safety hazards exist simultaneously. In the prior art, cotton yarns are usually adopted to plug two ends of tubular steel, but because the cotton yarns are soft in texture, part of steel grit sprayed at high speed can still enter the pipe body, and the field operation is influenced.
Disclosure of Invention
The invention aims to provide a tubular steel blocking device, and aims to solve the problems that steel grit is sprayed into tubular steel from two ends of the tubular steel in the prior art, field operation is affected, and potential safety hazards exist.
In order to achieve the purpose, the invention adopts the technical scheme that: provided is a tubular steel plugging device, comprising:
a baffle for shielding an end of the tubular steel;
the blocking block is arranged on the baffle and extends into the tubular steel; and
and the second adsorption piece is arranged on the blocking block and used for fixing at least one side surface of the blocking block with the inner wall of the tubular steel.
As another embodiment of the application, the tubular steel plugging device further comprises a first suction part, and the first suction part is arranged on the baffle plate and used for enabling the baffle plate to be tightly attached to the end part of the tubular steel.
As another embodiment of this application, the plugging block has an installation groove, and the second adsorption piece is embedded in the installation groove.
As another embodiment of this application, be equipped with first spout and second spout on the baffle, first spout with the second spout sets up perpendicularly, just first spout with slide respectively in the second spout and set up the shutoff piece.
As another embodiment of this application, first spout with the second spout is semi-closed cell body, first spout with be equipped with first elastic component between the shutoff piece, the second spout with be equipped with the second elastic component between the shutoff piece, first elastic component with the second elastic component is used for making the shutoff piece with tubulose steel inner wall butt.
As another embodiment of this application, first spout with the both ends opening of second spout extends to respectively the edge of baffle, first spout with it is equipped with two to slide respectively in the second spout the shutoff piece, two in the first spout be connected with first elastic expansion piece between the shutoff piece, two in the second spout be connected with second elastic expansion piece between the shutoff piece, first elastic piece with the second elastic piece is used for making the shutoff piece with the inner wall butt of tubulose steel.
As another embodiment of this application, tubular steel plugging device still includes the fixture block, the lateral wall of shutoff piece is equipped with the holding tank, the fixture block slides and locates in the holding tank, the fixture block with be equipped with the third elastic component between the holding tank, the fixture block be used for with tubular steel's inner wall butt.
As another embodiment of this application, tubular steel plugging device still includes the handle, the handle with the shutoff piece is located the relative both sides of baffle.
As another embodiment of the application, the handle is rotatably connected with the baffle, so that the handle can be folded and attached to the baffle.
As another embodiment of this application, be equipped with the sealing strip on the shutoff piece with the junction of baffle.
The tubular steel plugging device provided by the invention has the beneficial effects that: compared with the prior art, the blocking block of the tubular steel blocking device provided by the invention extends into the tubular steel, at least one side surface of the blocking block is fixed with the inner wall of the tubular steel under the action of the second adsorption piece, and the end part of the tubular steel is shielded by the baffle plate. The steel grit striking of high-speed injection is on the baffle, can not get into inside the tubulose steel, and the shutoff piece is laminated with tubulose steel inner wall, avoids the baffle to break away from tubulose steel tip after being struck by the steel grit, has further improved the fastening nature that this device and tubulose steel are connected.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic view illustrating a tubular steel plugging device and a tubular steel used in an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a tubular steel plugging device according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a tubular steel plugging device provided in the third embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a tubular steel plugging device according to a fourth embodiment of the present invention;
fig. 5 is a schematic structural diagram of a tubular steel plugging device provided in the fifth embodiment of the present invention;
fig. 6 is a schematic structural diagram of a blocking block according to a sixth embodiment of the present invention.
In the figure: 1. a baffle plate; 101. a first chute; 102. a second chute; 2. a plugging block; 3. a second adsorption member; 4. a handle; 5. a clamping block; 6. a third elastic member; 7. a first elastic member; 8. a second elastic member; 9. a first elastic expansion member; 10. a second elastic expansion member; 11. a sealing strip; 12. a first suction attachment; 13. a tubular steel material.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 3, a tubular steel plugging device provided by the present invention will now be described. The tubular steel blocking device comprises a baffle plate 1, a blocking block 2 and a second adsorption piece 3, wherein the baffle plate 1 is used for shielding the end part of a tubular steel 13; the plugging block 2 is arranged on the baffle plate 1 and extends into the tubular steel 13; the second adsorption piece 3 is arranged on the plugging block 2 and used for fixing at least one side surface of the plugging block 2 with the inner wall of the tubular steel 13.
Compared with the prior art, the tubular steel blocking device provided by the invention has the advantages that the blocking block 2 of the tubular steel blocking device extends into the tubular steel 13, at least one side surface is fixed with the inner wall of the tubular steel 13 under the action of the second adsorption piece 3, and the baffle 1 shields the end part of the tubular steel 13. The steel grit of high-speed injection strikes on baffle 1, can not get into inside tubular steel 13, and shutoff piece 2 and the laminating of 13 inner walls of tubular steel avoid baffle 1 to break away from 13 tip of tubular steel or take place to remove after being struck by the steel grit, have further improved the fastening nature that this device and tubular steel 13 are connected.
Preferably, the second adsorption member 3 may be disposed on one side surface of the block 2, or may be disposed on a plurality of adjacent side surfaces of the block 2, so that the connection between the block 2 and the tubular steel 13 is more stable.
Specifically, the plugging block 2 is in clearance fit with the tubular steel 13, so that the installation and the disassembly are convenient, and meanwhile, the second adsorption piece 3 enables at least one side surface of the plugging block 2 to be tightly fixedly connected with the tubular steel 13, so that the plugging block 2 is prevented from moving.
Referring to fig. 1 to 2, the tubular steel plugging device further includes a first suction attachment 12, where the first suction attachment 12 is disposed on the baffle plate 1, and is used for tightly attaching the baffle plate 1 to an end of the tubular steel 13.
The first suction piece 12 is adsorbed by the tubular steel 13, so that the end parts of the baffle plate 1 and the tubular steel 13 are attached and sealed, steel grit is prevented from entering the tubular steel 13 from the joint of the baffle plate 1 and the tubular steel 13, the steel grit sprayed at a high speed can be effectively prevented from entering the tubular steel 13, and the steel grit is prevented from falling to influence field operation.
Referring to fig. 1, a plugging block 2 has an installation groove, and a second adsorption member 3 is embedded in the installation groove.
The second adsorbs piece 3 and inlays the dress in the mounting groove, and the surface that the second adsorbs piece 3 and the surface of shutoff piece 2 are in the coplanar to realize that shutoff piece 2 and 13 inner walls of tubular steel are closely laminated, the second adsorbs piece 3 and is connected with shutoff piece 2 through threaded connection spare.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 3, a first sliding groove 101 and a second sliding groove 102 are disposed on a baffle 1, the first sliding groove 101 and the second sliding groove 102 are vertically disposed, and plugging blocks 2 are respectively slidably disposed in the first sliding groove 101 and the second sliding groove 102.
The position of the plugging block 2 is adjusted according to the inner diameters of different tubular steel products 13, so that the plugging block 2 is attached to the inner wall of the tubular steel products 13, the plugging block 2 is adsorbed to the inner wall of the tubular steel products 13 under the action of the second adsorption part 3, and the plugging block 2 is prevented from moving under the action of steel grit sprayed at a high speed. Aiming at tubular steel 13 with different sizes, the device has universality and saves cost.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 4, the first sliding chute 101 and the second sliding chute 102 are semi-closed chute bodies, a first elastic member 7 is disposed between the first sliding chute 101 and the blocking block 2, a second elastic member 8 is disposed between the second sliding chute 102 and the blocking block 2, and the first elastic member 7 and the second elastic member 8 are used for abutting the blocking block 2 against the inner wall of the tubular steel 13.
It should be noted that "semi-closed groove body" means that the first sliding groove 101 or the second sliding groove 102 has an open end and a closed end, respectively, and the open end extends to the edge of the baffle 1.
Compress first elastic component 7 and second elastic component 8, put into tubulose steel 13 back with the shutoff piece 2, loosen first elastic component 7 and second elastic component 8, make it resume elasticity, exert thrust to the shutoff piece 2 respectively, make shutoff piece 2 and 13 inner walls butts of tubulose steel, simultaneously, the second adsorbs 3 and 13 absorption of tubulose steel, improves the stability of being connected with tubulose steel 13.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 5, openings at two ends of the first sliding chute 101 and the second sliding chute 102 respectively extend to an edge of the baffle 1, two blocking blocks 2 are respectively slidably disposed in the first sliding chute 101 and the second sliding chute 102, a first elastic expansion member 9 is connected between the two blocking blocks 2 in the first sliding chute 101, and a second elastic expansion member 10 is connected between the two blocking blocks 2 in the second sliding chute 102.
Compress two shutoff blocks 2 in the first spout 101 and two shutoff blocks 2 in the second spout 102 respectively, after putting into tubulose steel 13, elasticity is resumeed to first elastic expansion piece 9 and second elastic expansion piece 10, make shutoff block 2 and 13 inner walls butt of tubulose steel, realize the chucking to tubulose steel 13, baffle 1 shields the 13 tip of tubulose steel, avoid high-speed injection's steel sand to get into in the tubulose steel 13, avoid baffle 1 atress to take place to remove simultaneously, first elastic component 101 and second elastic component 102 are used for making the inner wall butt of shutoff block 2 and tubulose steel 13, and simultaneously, second adsorption member 3 adsorbs with tubulose steel 13, further improve the fastening nature that shutoff block 2 and tubulose steel 13 are connected.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 6, the tubular steel plugging device further includes a fixture block 5, a side wall of the plugging block 2 is provided with an accommodating groove, the fixture block 5 is slidably disposed in the accommodating groove, a third elastic element 6 is disposed between the fixture block 5 and the accommodating groove, and the fixture block 5 is used for abutting against an inner wall of the tubular steel 13.
The inner diameter of the tubular steel 13 is larger than that of the blocking block 2, the clamping block 5 is clamped with the inner wall of the tubular steel 13 under the action of the third elastic piece 6, the device is suitable for tubular steel 13 with different sizes, and the application range of the device is widened.
Preferably, can set up the second on the shutoff piece 2 and adsorb piece 3, the second adsorbs piece 3 and fixture block 5 and locates the both sides face adjacent on the shutoff piece 2 respectively, and the second adsorbs piece 3 and makes one side of shutoff piece 2 adsorb tubular steel 13 inner wall, and fixture block 5 is with another side of shutoff piece 2 and tubular steel 13 joint, further improves the fastening nature that shutoff piece 2 and tubular steel 13 are connected.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 2, the tubular steel plugging device further includes a handle 4, and the handle 4 and the plugging block 2 are disposed on two opposite sides of the baffle 1.
After the sand blasting is finished, the handle 4 is pulled down to disconnect the plugging block 2 and the baffle plate 1 from the tubular steel 13, so that the operation is convenient.
Referring to fig. 2, as a specific implementation manner of the embodiment of the present invention, the handle 4 is rotatably connected to the baffle 1, so that the handle 4 can be folded and attached to the baffle 1.
When the device is not used, the handle 4 is rotated to be attached to the baffle 1, so that the device is convenient to store.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 2, a sealing strip 11 is disposed at a joint of the blocking block 2 and the baffle 1.
After the plugging block 2 is connected with the tubular steel 13, the sealing strip 11 is attached to the inner wall of the tubular steel 13 in a sealing manner, so that the sealing property of the connection between the plugging block 2 and the tubular steel 13 is improved, and steel grit is prevented from entering the tubular steel 13.
Specifically, the weather strip 11 is a rubber member.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. Tubular steel plugging device, its characterized in that includes:
a baffle for shielding an end of the tubular steel;
the blocking block is arranged on the baffle and extends into the tubular steel; and
and the second adsorption piece is arranged on the blocking block and used for fixing at least one side surface of the blocking block with the inner wall of the tubular steel.
2. A tubular steel plugging device according to claim 1, further comprising a first suction fitting provided on the baffle plate for closely fitting the baffle plate to an end of the tubular steel.
3. A tubular steel product plugging device according to claim 2, wherein the block has a mounting groove, and the second suction member is fitted in the mounting groove.
4. A tubular steel product plugging device according to claim 1, wherein said baffle plate is provided with a first sliding groove and a second sliding groove, said first sliding groove and said second sliding groove are vertically disposed, and said plugging blocks are slidably disposed in said first sliding groove and said second sliding groove, respectively.
5. A tubular steel product plugging device according to claim 4, wherein the first sliding groove and the second sliding groove are semi-closed groove bodies, a first elastic member is arranged between the first sliding groove and the plugging block, a second elastic member is arranged between the second sliding groove and the plugging block, and the first elastic member and the second elastic member are used for enabling the plugging block to abut against the inner wall of the tubular steel product.
6. A tubular steel product plugging device according to claim 4, wherein openings at both ends of the first sliding groove and the second sliding groove extend to the edge of the baffle plate, two plugging blocks are slidably disposed in the first sliding groove and the second sliding groove, respectively, a first elastic expansion member is connected between the two plugging blocks in the first sliding groove, a second elastic expansion member is connected between the two plugging blocks in the second sliding groove, and the first elastic member and the second elastic member are used for enabling the plugging blocks to abut against the inner wall of the tubular steel product.
7. A tubular steel plugging device according to claim 1 or 2, further comprising a locking block, wherein the side wall of the plugging block is provided with a receiving groove, the locking block is slidably disposed in the receiving groove, a third elastic member is disposed between the locking block and the receiving groove, and the locking block is adapted to abut against the inner wall of the tubular steel.
8. A tubular steel plugging device according to claim 1 further comprising a handle disposed on opposite sides of the baffle from the block.
9. A tubular steel closure device according to claim 8, wherein the handle is pivotally connected to the flapper such that the handle can be folded over to engage the flapper.
10. A tubular steel plugging device according to claim 1, wherein a sealing strip is provided at the junction of the plugging block and the baffle plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011182384.5A CN112497086B (en) | 2020-10-29 | 2020-10-29 | Tubular steel plugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011182384.5A CN112497086B (en) | 2020-10-29 | 2020-10-29 | Tubular steel plugging device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112497086A true CN112497086A (en) | 2021-03-16 |
| CN112497086B CN112497086B (en) | 2022-04-12 |
Family
ID=74954565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011182384.5A Active CN112497086B (en) | 2020-10-29 | 2020-10-29 | Tubular steel plugging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112497086B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080314468A1 (en) * | 2007-06-22 | 2008-12-25 | Jon Houghton | Cap or Plate With Electronic Or Magnetic Marker |
| CN204512785U (en) * | 2015-01-29 | 2015-07-29 | 安徽海德石油化工有限公司 | A kind of pipeline sealing device |
| US20170146177A1 (en) * | 2015-11-20 | 2017-05-25 | Usa Industries, Inc. | Gripping apparatus and devices for plugging of pipes, orifices or connecting |
| CN207421626U (en) * | 2017-11-27 | 2018-05-29 | 中国大唐集团科学技术研究院有限公司华中分公司 | A kind of primary air piping gaging hole plug |
| CN207455042U (en) * | 2017-11-27 | 2018-06-05 | 江苏瑞春标准件有限公司 | Magnetic Leakproof plug screw |
| CN109113641A (en) * | 2017-06-25 | 2019-01-01 | 西安安特石油科技有限公司 | A kind of oil field shaft mouth oil spout closure cell structure |
| CN208703316U (en) * | 2018-07-25 | 2019-04-05 | 山东汇东新能源有限公司 | Coal-based oil product conveying pipeline with anti-blocking function |
| CN208701656U (en) * | 2018-08-07 | 2019-04-05 | 东莞市水电建筑安装工程有限公司 | The detection of underground continuous wall groove segment seam crossing percolating water and closure prosthetic device |
| CN208831711U (en) * | 2018-10-12 | 2019-05-07 | 南京工业大学 | Formula girder steel crosses welding hole plugging device is inhaled to magnetism |
| CN210566959U (en) * | 2019-07-26 | 2020-05-19 | 中石化南京工程有限公司 | Novel plugging device for long oil and gas transmission pipeline |
| CN210890590U (en) * | 2019-09-16 | 2020-06-30 | 刘达文 | Plug with a locking element |
| CN111775068A (en) * | 2020-06-09 | 2020-10-16 | 金川集团股份有限公司 | Plugging device for pipeline |
-
2020
- 2020-10-29 CN CN202011182384.5A patent/CN112497086B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080314468A1 (en) * | 2007-06-22 | 2008-12-25 | Jon Houghton | Cap or Plate With Electronic Or Magnetic Marker |
| CN204512785U (en) * | 2015-01-29 | 2015-07-29 | 安徽海德石油化工有限公司 | A kind of pipeline sealing device |
| US20170146177A1 (en) * | 2015-11-20 | 2017-05-25 | Usa Industries, Inc. | Gripping apparatus and devices for plugging of pipes, orifices or connecting |
| CN109113641A (en) * | 2017-06-25 | 2019-01-01 | 西安安特石油科技有限公司 | A kind of oil field shaft mouth oil spout closure cell structure |
| CN207421626U (en) * | 2017-11-27 | 2018-05-29 | 中国大唐集团科学技术研究院有限公司华中分公司 | A kind of primary air piping gaging hole plug |
| CN207455042U (en) * | 2017-11-27 | 2018-06-05 | 江苏瑞春标准件有限公司 | Magnetic Leakproof plug screw |
| CN208703316U (en) * | 2018-07-25 | 2019-04-05 | 山东汇东新能源有限公司 | Coal-based oil product conveying pipeline with anti-blocking function |
| CN208701656U (en) * | 2018-08-07 | 2019-04-05 | 东莞市水电建筑安装工程有限公司 | The detection of underground continuous wall groove segment seam crossing percolating water and closure prosthetic device |
| CN208831711U (en) * | 2018-10-12 | 2019-05-07 | 南京工业大学 | Formula girder steel crosses welding hole plugging device is inhaled to magnetism |
| CN210566959U (en) * | 2019-07-26 | 2020-05-19 | 中石化南京工程有限公司 | Novel plugging device for long oil and gas transmission pipeline |
| CN210890590U (en) * | 2019-09-16 | 2020-06-30 | 刘达文 | Plug with a locking element |
| CN111775068A (en) * | 2020-06-09 | 2020-10-16 | 金川集团股份有限公司 | Plugging device for pipeline |
Non-Patent Citations (1)
| Title |
|---|
| 武占文等: "《用于双金属复合管涂敷的管端保护装置研究》", 《石油工程建设》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112497086B (en) | 2022-04-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2923144Y (en) | Pipe argon-arc welding argon filler | |
| CN112497086B (en) | Tubular steel plugging device | |
| CN204201367U (en) | A kind of small-bore pipeline on-line production send blocking device | |
| CN207225961U (en) | A kind of effective shockproof transport case of vehicle protection | |
| CN101590821B (en) | Self-discharging transporter | |
| CN202700719U (en) | Telescopic sprinkler | |
| CN210218972U (en) | Automobile flange plate with smooth surface | |
| CN211757021U (en) | Safety cone barrel cleaning device | |
| CN208634637U (en) | With the block head device for cleaning iron filings | |
| CN208456168U (en) | A kind of floor edge protection steel pipe tool-type fixture | |
| CN206216536U (en) | A kind of quick unlatching closed type fixture | |
| CN208103054U (en) | A kind of hand-held handling device of solar panel | |
| CN208923429U (en) | A kind of terminal connector | |
| CN206409282U (en) | One kind adds blue tank slag-drip opening blanking cover for automobile-used | |
| CN202203594U (en) | Pipe joint plugging device | |
| CN205260566U (en) | Anti -loose screw cap | |
| CN205271116U (en) | A argon filling frock for pipe argon arc weld | |
| CN109973733A (en) | A kind of mining liquid carbon dioxide conveying device | |
| CN213541099U (en) | Bearing seat convenient for oil injection | |
| CN220842519U (en) | Outer windshield capsule compacting structure of railway vehicle | |
| CN219712556U (en) | External silencing and plugging device for wall bushing | |
| CN208295368U (en) | A kind of pipe fitting with blocking function | |
| CN221428131U (en) | High-speed communication connector for vehicle | |
| CN213870075U (en) | Foam pad for air duct rear-section assembly | |
| CN207778931U (en) | The glass plate of refrigerator-freezer door-plate and the connection structure of frame |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |