CN112692754A - Fixing device is used in computer mainboard processing - Google Patents
Fixing device is used in computer mainboard processing Download PDFInfo
- Publication number
- CN112692754A CN112692754A CN202011497643.3A CN202011497643A CN112692754A CN 112692754 A CN112692754 A CN 112692754A CN 202011497643 A CN202011497643 A CN 202011497643A CN 112692754 A CN112692754 A CN 112692754A
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- CN
- China
- Prior art keywords
- movable
- screw rod
- fixing device
- block
- processing
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- 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.)
- Pending
Links
- 230000002457 bidirectional effect Effects 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 230000003139 buffering effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/12—Brushes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/04—Cleaning by suction, with or without auxiliary action
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention belongs to the technical field of computer mainboard processing, and particularly relates to a fixing device for computer mainboard processing, which comprises an annular pipe, wherein two vertical plates are fixedly arranged in the annular pipe, a vertically arranged movable plate is slidably arranged between the two vertical plates, a horizontally arranged push rod motor is arranged on the vertical plates, two movable blocks are slidably arranged on opposite sides of the two movable plates, a positioning block is slidably arranged on one side of each movable block, a right-angle placing groove is formed in one side of the positioning block, which is far away from the movable block, a vertically arranged mounting groove is formed in one side of the movable block, which is close to the positioning block, and a buffer block is slidably arranged in; the clamping device realizes fixed clamping of the four corners of the main board, realizes elastic clamping in the transverse and vertical directions, has a buffering effect, cannot damage the main board, is stable in clamping and convenient to process, is convenient to debug and collect scraps generated by processing, and is easy to popularize.
Description
Technical Field
The invention relates to the technical field of computer mainboard processing, in particular to a fixing device for computer mainboard processing.
Background
The main board is one of the most basic and important components of a microcomputer and can be divided into a commercial main board and an industrial main board. Typically a rectangular circuit board on which the main circuitry that makes up the computer is mounted. When a computer mainboard is machined, a good fixing measure is not provided, the existing fixing measure easily causes damage to the mainboard, and meanwhile, scraps generated during machining are inconvenient to clean and fall on a fixing device, so that the fixing device for machining the computer mainboard is provided.
Disclosure of Invention
The present invention is directed to a fixing device for processing a computer motherboard, so as to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a fixing device for processing a computer mainboard comprises a ring-shaped pipe, wherein two vertical plates are fixedly installed in the ring-shaped pipe, a vertically arranged movable plate is installed between the two vertical plates in a sliding manner, a horizontally arranged push rod motor is arranged on the vertical plates, two movable blocks are installed on one opposite sides of the two movable plates in a sliding manner, a positioning block is installed on one side of the movable block in a sliding manner, a right-angle placing groove is formed in one side, away from the movable block, of the positioning block, a vertically arranged mounting groove is formed in one side, close to the positioning block, of the movable block, a buffer block is installed in the mounting groove in a sliding manner, the buffer block is fixedly connected with the positioning block, springs are vertically arranged at the top and the bottom of the buffer block, the two springs are respectively and fixedly connected with the inner wall at the top and the inner wall at, sliding mounting has the slide in the cavity post, and the both sides of slide are equipped with the spring post that the level set up, the cross axle is kept away from the one end of push rod motor and is extended to in the cavity post with slide fixed connection, the one end and the fly leaf fixed connection of cross axle are kept away from to the cavity post, and fixed mounting has the receiving fill between two risers, and the discharging pipe is installed to the bottom of receiving the fill, one side of discharging pipe is equipped with the blast pipe, and the one end of blast pipe is connected with the fan, the sealed lid is installed to the bottom screw thread of discharging pipe, and the.
Preferably, one side of the discharge pipe, which is far away from the exhaust pipe, is rotatably provided with an operating rod which is horizontally arranged, one end of the operating rod extends into the discharge pipe and is fixedly connected with a brush, and the brush is in contact with the filter screen.
Preferably, one side of the movable plate close to the movable block is provided with a vertically-arranged driving groove, a vertically-arranged bidirectional screw rod is rotatably mounted in the driving groove, the bidirectional screw rod is in threaded connection with the movable block, the movable plate is provided with a speed reduction motor, and an output shaft of the speed reduction motor is in transmission connection with the bidirectional screw rod.
Preferably, the bidirectional screw rod consists of an upper threaded rod and a lower threaded rod, the thread directions of the upper threaded rod and the lower threaded rod are opposite, and the two movable blocks are respectively in threaded connection with the upper threaded rod and the lower threaded rod.
Preferably, a horizontally arranged mounting hole is formed in one side, away from the movable plate, of the cavity column, one end, away from the push rod motor, of the cross shaft penetrates through the mounting hole, and the cross shaft is connected with the inner wall of the mounting hole in a sliding mode.
Preferably, a horizontally arranged cylindrical hole is formed in the movable plate, a horizontally arranged cylindrical rod is fixedly installed between the two vertical plates, the movable plate is slidably sleeved on the cylindrical rod through the cylindrical hole, and the cylindrical rod is slidably connected with the inner wall of the cylindrical hole.
Preferably, the bottom of the two sides of the annular pipe is fixedly provided with four vertically arranged supporting leg piles.
The invention has the beneficial effects that:
drive the cross axle through the push rod motor and remove to make cavity post and fly leaf remove, adjust the position between two fly leaves, rotate through gear motor and make two-way lead screw rotate and make threaded rod and lower threaded rod rotate, make two movable blocks be close to each other, adjust the position of two locating pieces on the same fly leaf, put the four corners of mainboard in the right angle standing groove, the realization is fixed the centre gripping to the four corners position of mainboard, the elasticity that receives the spring through the buffer block makes the locating piece can move about in vertical direction, realize being the elasticity centre gripping when vertical direction centre gripping mainboard, have the cushioning effect, can not harm the mainboard, provide elasticity for the slide through the spring post and make the cross axle can move about at horizontal migration, the realization has the effect of elasticity promotion to horizontal thrust, can not harm the mainboard when horizontal centre gripping mainboard, improve use quality.
Through the gas in the fan extraction blast pipe for piece in the discharging pipe and the receipt fill absorption course of working blocks the piece through the filter screen, opens sealed lid and can discharge the piece, avoids the piece in disorder to fly, makes the brush rotate the piece on the brush removal filter screen through manual rotation action bars, guarantees that the air current normally flows.
The clamping device realizes fixed clamping of the four corners of the main board, realizes elastic clamping in the transverse and vertical directions, has a buffering effect, cannot damage the main board, is stable in clamping and convenient to process, is convenient to debug and collect scraps generated by processing, and is easy to popularize.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;
FIG. 3 is an enlarged view of the structure at B in FIG. 1;
FIG. 4 is a schematic cross-sectional view of a tapping pipe and a degassing pipe according to the invention;
fig. 5 is a schematic sectional view of the movable plate of the present invention.
In the figure: 1. an annular tube; 2. a vertical plate; 3. a cylindrical rod; 4. a movable plate; 5. a push rod motor; 6. a movable block; 7. positioning blocks; 8. a right-angle placing groove; 9. mounting grooves; 10. a buffer block; 11. a spring; 12. a horizontal axis; 13. a cavity column; 14. a slide plate; 15. a spring post; 16. a receiving hopper; 17. a discharge pipe; 18. an exhaust pipe; 19. a fan; 20. filtering with a screen; 21. an operating lever; 22. a brush; 23. a sealing cover; 24. a bidirectional screw rod; 25. a speed reducing motor.
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.
Referring to fig. 1-5, a fixing device for processing a computer motherboard comprises a circular tube 1, two vertical plates 2 are fixedly installed in the circular tube 1, a vertically arranged movable plate 4 is slidably installed between the two vertical plates 2, a horizontally arranged push rod motor 5 is arranged on the vertical plates 2, two movable blocks 6 are slidably installed on one opposite sides of the two movable plates 4, a positioning block 7 is slidably installed on one side of each movable block 6, a right-angle placing groove 8 is formed on one side of each positioning block 7 far away from the corresponding movable block 6, a vertically arranged mounting groove 9 is formed on one side of each movable block 6 close to the corresponding positioning block 7, a buffer block 10 is slidably installed in the mounting groove 9, the buffer block 10 is fixedly connected with the positioning blocks 7, springs 11 are vertically arranged at the top and the bottom of the buffer block 10, the two springs 11 are respectively and fixedly connected with the inner wall at the top and the inner wall at the bottom, one end of the cross shaft 12 is slidably connected with a cavity column 13, a sliding plate 14 is slidably mounted in the cavity column 13, spring columns 15 horizontally arranged are arranged on two sides of the sliding plate 14, one end of the cross shaft 12, far away from the push rod motor 5, extends into the cavity column 13 and is fixedly connected with the sliding plate 14, one end of the cavity column 13, far away from the cross shaft 12, is fixedly connected with the movable plate 4, a receiving hopper 16 is fixedly mounted between the two vertical plates 2, a discharge pipe 17 is mounted at the bottom of the receiving hopper 16, an exhaust pipe 18 is arranged on one side of the discharge pipe 17, one end of the exhaust pipe 18 is connected with a fan 19, a sealing cover 23 is mounted at the bottom of the discharge pipe 17.
In this embodiment, a horizontally disposed operating rod 21 is rotatably installed on a side of the discharge pipe 17 away from the exhaust pipe 18, one end of the operating rod 21 extends into the discharge pipe 17 and is fixedly connected with a brush 22, and the brush 22 contacts with the filter 20.
In this embodiment, a vertically arranged driving groove is formed in one side of the movable plate 4 close to the movable block 6, a vertically arranged bidirectional screw rod 24 is rotatably mounted in the driving groove, the bidirectional screw rod 24 is in threaded connection with the movable block 6, a speed reduction motor 25 is arranged on the movable plate 4, and an output shaft of the speed reduction motor 25 is in transmission connection with the bidirectional screw rod 24.
In this embodiment, the bidirectional screw rod 24 is composed of an upper threaded rod and a lower threaded rod, the thread directions of the upper threaded rod and the lower threaded rod are opposite, and the two movable blocks 6 are respectively in threaded connection with the upper threaded rod and the lower threaded rod.
In the embodiment, a horizontally arranged mounting hole is formed in one side of the cavity column 13 away from the movable plate 4, one end of the transverse shaft 12 away from the push rod motor 5 penetrates through the mounting hole, and the transverse shaft 12 is slidably connected with the inner wall of the mounting hole.
In this embodiment, set up the cylinder hole that the level set up on the fly leaf 4, fixed mounting has the cylinder pole 3 that the level set up between two risers 2, and on the fly leaf 4 located cylinder pole 3 through cylinder hole sliding sleeve, cylinder pole 3 and the inner wall sliding connection in cylinder hole.
In this embodiment, the bottom of the two sides of the annular pipe 1 is fixedly provided with four vertically arranged supporting leg piles.
The working principle is as follows: the transverse shaft 12 is driven by the push rod motor 5 to move so that the cavity column 13 and the movable plates 4 move, the position between the two movable plates 4 is adjusted, the bidirectional screw rod 24 rotates through the rotation of the speed reducing motor 25 so that the upper threaded rod and the lower threaded rod rotate, the two movable blocks 6 are close to each other, the positions of the two positioning blocks 7 on the same movable plate 4 are adjusted, the four corners of the main board are placed in the right-angle placing grooves 8, the fixed clamping of the four corners of the main board is realized, the positioning blocks 7 can move in the vertical direction through the elasticity of the springs 11 on the buffer blocks 10, the elastic clamping is realized when the main board is clamped in the vertical direction, the buffer effect is realized, the main board is not damaged, the transverse shaft 12 can move in the horizontal direction through the elasticity provided for the sliding plate 14 by the spring columns 15, the effect of elastic pushing on the transverse, the use quality is improved. Extract the gas in the blast pipe 18 through fan 19 for discharging pipe 17 and receiving fill 16 absorb the piece in the course of working, block the piece through filter screen 20, open sealed lid 23 and can discharge the piece, avoid the piece to fly in disorder, make brush 22 rotate the brush through manual rotation action bars 21 and remove the piece on the filter screen 20, guarantee that the air current normally flows.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. A fixing device for processing a computer mainboard comprises a ring-shaped pipe (1) and is characterized in that two vertical plates (2) are fixedly installed in the ring-shaped pipe (1), a vertically arranged movable plate (4) is installed between the two vertical plates (2) in a sliding manner, a horizontally arranged push rod motor (5) is arranged on each vertical plate (2), two movable blocks (6) are installed on one opposite sides of the two movable plates (4) in a sliding manner, a positioning block (7) is installed on one side of each movable block (6) in a sliding manner, a right-angle placing groove (8) is formed in one side, away from the movable block (6), of each movable block (6), a vertically arranged mounting groove (9) is formed in one side, close to the positioning block (7), of each movable block (6), a buffer block (10) is installed in each mounting groove (9) in a sliding manner, and the, the top and the bottom of buffer block (10) are vertical springs (11), two springs (11) are respectively fixedly connected with the inner wall of the top and the inner wall of the bottom of mounting groove (9), a horizontal shaft (12) is connected with the push rod of push rod motor (5), one end of the horizontal shaft (12) is slidably connected with a cavity column (13), a sliding plate (14) is slidably mounted in the cavity column (13), spring columns (15) are horizontally arranged on two sides of the sliding plate (14), one end of the horizontal shaft (12) far away from the push rod motor (5) extends into the cavity column (13) and is fixedly connected with the sliding plate (14), one end of the cavity column (13) far away from the horizontal shaft (12) is fixedly connected with a movable plate (4), a receiving hopper (16) is fixedly mounted between two vertical plates (2), a discharging pipe (17) is mounted at the bottom of the receiving hopper (16), and a discharging pipe (18) is arranged on one side of the discharging pipe (17), one end of the exhaust pipe (18) is connected with a fan (19), a sealing cover (23) is installed at the bottom of the discharge pipe (17) in a threaded mode, and a filter screen (20) is arranged in one end, close to the discharge pipe (17), of the exhaust pipe (18).
2. The fixing device for processing the computer main board according to claim 1, wherein a horizontally arranged operating rod (21) is rotatably installed on one side of the discharging pipe (17) far away from the discharging pipe (18), one end of the operating rod (21) extends into the discharging pipe (17) and is fixedly connected with a brush (22), and the brush (22) is in contact with the filter screen (20).
3. The fixing device for machining the computer main board according to claim 1, wherein a vertically arranged driving groove is formed in one side, close to the movable block (6), of the movable plate (4), a vertically arranged bidirectional screw rod (24) is rotatably mounted in the driving groove, the bidirectional screw rod (24) is in threaded connection with the movable block (6), a speed reduction motor (25) is arranged on the movable plate (4), and an output shaft of the speed reduction motor (25) is in transmission connection with the bidirectional screw rod (24).
4. The fixing device for processing the computer mainboard as claimed in claim 3, wherein the bidirectional screw rod (24) is composed of an upper screw rod and a lower screw rod, the screw directions of the upper screw rod and the lower screw rod are opposite, and the two movable blocks (6) are respectively in threaded connection with the upper screw rod and the lower screw rod.
5. The fixing device for processing the computer main board as claimed in claim 1, wherein a horizontally disposed mounting hole is formed on one side of the cavity pillar (13) away from the movable plate (4), one end of the transverse shaft (12) away from the push rod motor (5) penetrates through the mounting hole, and the transverse shaft (12) is slidably connected with an inner wall of the mounting hole.
6. The fixing device for processing the computer main board according to claim 1, wherein a horizontally arranged cylindrical hole is formed in the movable plate (4), a horizontally arranged cylindrical rod (3) is fixedly installed between the two vertical plates (2), the movable plate (4) is slidably sleeved on the cylindrical rod (3) through the cylindrical hole, and the cylindrical rod (3) is slidably connected with the inner wall of the cylindrical hole.
7. The fixing device for processing the computer main board as claimed in claim 1, wherein the bottom of the two sides of the annular tube (1) is fixedly provided with four vertically arranged supporting leg piles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011497643.3A CN112692754A (en) | 2020-12-17 | 2020-12-17 | Fixing device is used in computer mainboard processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011497643.3A CN112692754A (en) | 2020-12-17 | 2020-12-17 | Fixing device is used in computer mainboard processing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112692754A true CN112692754A (en) | 2021-04-23 |
Family
ID=75508867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011497643.3A Pending CN112692754A (en) | 2020-12-17 | 2020-12-17 | Fixing device is used in computer mainboard processing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112692754A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5790956A (en) * | 1980-11-28 | 1982-06-05 | Hitachi Ltd | Gripper for wafer |
| US20160039587A1 (en) * | 2014-08-08 | 2016-02-11 | Corning Incorporated | Magazine apparatuses for holding glass articles during processing |
| CN107186554A (en) * | 2017-07-14 | 2017-09-22 | 芜湖威灵数码科技有限公司 | A kind of machinery knives Sharpening device |
| CN208788393U (en) * | 2018-08-14 | 2019-04-26 | 天津市奇桥金属制品有限公司 | A kind of sheet metal high stable type clamping device |
| CN209407480U (en) * | 2018-10-30 | 2019-09-20 | 石狮市佰旺五金有限责任公司 | Drilling equipment is used in a kind of production of portable handware |
| CN209648550U (en) * | 2019-02-19 | 2019-11-19 | 南京汽轮电机集团泰兴宁兴机械有限公司 | A kind of assembling jig having pooling feature |
| CN209736685U (en) * | 2019-02-26 | 2019-12-06 | 江苏莘翔机电有限公司 | Stable-clamping punching device for processing elevator accessories |
| CN209887467U (en) * | 2019-05-24 | 2020-01-03 | 崔广磊 | Fixture for cutting current transformer |
| CN210818533U (en) * | 2019-10-16 | 2020-06-23 | 西安明日宇航工业有限责任公司 | Anchor clamps are used in aviation panel production |
| CN111774664A (en) * | 2020-07-06 | 2020-10-16 | 十堰精制车桥有限公司 | Automobile semi-axle chamfering device |
| CN211803900U (en) * | 2020-03-20 | 2020-10-30 | 莱芜南华煤矿机械有限公司 | Drilling equipment for steel production |
| CN111941186A (en) * | 2020-08-07 | 2020-11-17 | 丰宁满族自治县宏亭汽车部件有限公司 | Polishing device for truck frame production and using method thereof |
-
2020
- 2020-12-17 CN CN202011497643.3A patent/CN112692754A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5790956A (en) * | 1980-11-28 | 1982-06-05 | Hitachi Ltd | Gripper for wafer |
| US20160039587A1 (en) * | 2014-08-08 | 2016-02-11 | Corning Incorporated | Magazine apparatuses for holding glass articles during processing |
| CN107186554A (en) * | 2017-07-14 | 2017-09-22 | 芜湖威灵数码科技有限公司 | A kind of machinery knives Sharpening device |
| CN208788393U (en) * | 2018-08-14 | 2019-04-26 | 天津市奇桥金属制品有限公司 | A kind of sheet metal high stable type clamping device |
| CN209407480U (en) * | 2018-10-30 | 2019-09-20 | 石狮市佰旺五金有限责任公司 | Drilling equipment is used in a kind of production of portable handware |
| CN209648550U (en) * | 2019-02-19 | 2019-11-19 | 南京汽轮电机集团泰兴宁兴机械有限公司 | A kind of assembling jig having pooling feature |
| CN209736685U (en) * | 2019-02-26 | 2019-12-06 | 江苏莘翔机电有限公司 | Stable-clamping punching device for processing elevator accessories |
| CN209887467U (en) * | 2019-05-24 | 2020-01-03 | 崔广磊 | Fixture for cutting current transformer |
| CN210818533U (en) * | 2019-10-16 | 2020-06-23 | 西安明日宇航工业有限责任公司 | Anchor clamps are used in aviation panel production |
| CN211803900U (en) * | 2020-03-20 | 2020-10-30 | 莱芜南华煤矿机械有限公司 | Drilling equipment for steel production |
| CN111774664A (en) * | 2020-07-06 | 2020-10-16 | 十堰精制车桥有限公司 | Automobile semi-axle chamfering device |
| CN111941186A (en) * | 2020-08-07 | 2020-11-17 | 丰宁满族自治县宏亭汽车部件有限公司 | Polishing device for truck frame production and using method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210423 |
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| RJ01 | Rejection of invention patent application after publication |