CN215278740U - Cleaning device of hand-held type dust particle counter - Google Patents
Cleaning device of hand-held type dust particle counter Download PDFInfo
- Publication number
- CN215278740U CN215278740U CN202121487825.2U CN202121487825U CN215278740U CN 215278740 U CN215278740 U CN 215278740U CN 202121487825 U CN202121487825 U CN 202121487825U CN 215278740 U CN215278740 U CN 215278740U
- Authority
- CN
- China
- Prior art keywords
- inner box
- particle counter
- dust particle
- box
- hose
- 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
- 239000002245 particle Substances 0.000 title claims abstract description 65
- 239000000428 dust Substances 0.000 title claims abstract description 63
- 238000004140 cleaning Methods 0.000 title claims abstract description 42
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 238000007789 sealing Methods 0.000 claims description 41
- 239000000523 sample Substances 0.000 claims description 14
- 210000001503 joint Anatomy 0.000 claims description 12
- 230000001681 protective effect Effects 0.000 claims description 9
- 238000005086 pumping Methods 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 5
- 230000006378 damage Effects 0.000 description 7
- 244000309464 bull Species 0.000 description 6
- 210000004243 sweat Anatomy 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 241000904014 Pappus Species 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000010405 clearance mechanism Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000007592 spray painting technique Methods 0.000 description 1
Images
Landscapes
- Cleaning In General (AREA)
Abstract
The utility model provides a cleaning device of hand-held type dust particle counter. The cleaning device of the handheld dust particle counter comprises an inner box; the outer box is hinged to one side of the inner box; the particle counter installing cavities are respectively arranged in the inner box and the outer box; the two hose arranging cavities are respectively arranged in the inner box and the outer box; the two air pump mounting cavities are respectively arranged in the inner box and the outer box; and the closed cleaning mechanism is arranged on the inner wall of the inner box. The utility model provides a cleaning device of hand-held type dust particle counter has can to instrument inside clear up, and not fragile electronic component, places and cleans up the advantage of maintaining to the instrument surface convenient and fast before the use.
Description
Technical Field
The utility model relates to a clean technical field especially relates to a cleaning device of hand-held type dust particle counter.
Background
A handheld dust particle counter is an instrument used for measuring the number and particle size distribution of dust particles in a single volume in a clean environment. The method can be widely applied to pharmaceutical inspection departments, blood centers, epidemic prevention stations, disease control centers, quality supervision departments and other rights and welfare agencies in various provinces and markets, electronic industries, pharmaceutical workshops, semiconductors, optical and precision machining, plastics, spray painting, hospitals, environmental protection, inspection departments and other production enterprises and scientific research departments.
However, when the handheld dust particle counter is cleaned at present, the inside of the handheld dust particle counter is in a hollow cylindrical shape, a cleaning brush plate cannot be completely cleaned, a cleaning dead angle exists, a hairbrush on the cleaning brush plate can damage electronic elements inside the handheld dust particle counter by being carelessly and violently used during cleaning, and due to the fact that the handheld instrument is used, sweat stains, stains and dust can be left on the instrument after long-time use, and the handheld dust particle counter can cause infection and corrosion to the surface structure of the instrument in the process of placing the instrument after use.
Therefore, there is a need to provide a new cleaning device for a handheld dust particle counter to solve the above-mentioned problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem provide a can to instrument inside clear up, and not fragile electronic component, place and convenient and fast before the use clear up the cleaning device of the hand-held type dust particle counter of maintaining to the instrument surface.
In order to achieve the above object, the technical solution of the present invention is specifically realized as follows:
the utility model provides a cleaning device of hand-held type dust particle counter, include:
an inner box; the outer box is hinged to one side of the inner box; the particle counter installing cavities are respectively arranged in the inner box and the outer box; the two hose arranging cavities are respectively arranged in the inner box and the outer box; the two air pump mounting cavities are respectively arranged in the inner box and the outer box; the closed cleaning mechanism is arranged on the inner wall of the inner box; and the vacuum air pumping and cleaning mechanism is arranged on the inner box.
As a further aspect of the present invention, the closed cleaning mechanism includes a dual-shaft motor, two main bevel gears, two rotating rods and two slave bevel gears, the dual-shaft motor is fixedly mounted on the outer wall of one side of the inner box, two the main bevel gears are mounted respectively on two output shafts of the dual-shaft motor, two the rotating rods are mounted by rotating on the inner wall of the inner box, and two one ends of the rotating rods extend to the outside of the inner box, two slave bevel gears are respectively fixed to be sleeved on corresponding two the rotating rods extend to the one end outside the inner box, and two slave bevel gears are respectively engaged with two the master bevel gears.
As a further proposal of the utility model, the vacuum air pumping cleaning mechanism comprises a vacuum air pump, a hose, a sealing joint, two fixing bolts, a first sealing cover, a butt joint cover, a handheld dust particle counter, an air speed probe, a second sealing cover and a pressure release valve, wherein the vacuum air pump is arranged in the air pump arrangement cavity, the hose is arranged in the hose arrangement cavity, the sealing joint is fixedly arranged at the exhaust end of the hose, the two fixing bolts are arranged on the sealing joint in a threaded manner, the butt joint cover is fixedly arranged on the inner wall of the top part of the first sealing cover, the first sealing cover is fixedly arranged on the air inlet end of the hose, the handheld dust particle counter is arranged at one side of the inner box, the air speed probe is fixedly arranged at the top part of the handheld dust particle counter, the air speed probe is butted with the butt joint cover, the second sealing cover is fixedly installed at the top of the handheld dust particle counter, the second sealing cover is located outside the wind speed probe, and the pressure release valve is fixedly installed on the outer wall of one side of the second sealing cover.
As a further aspect of the present invention, the bottom of the inner box with the annular buckle, two, is all installed at the top of outer container annular buckle looks adaptation, the bottom of inner box with the handle is all installed at the top of outer container, be provided with the antiskid area on hand.
As a further scheme of the utility model, two screw holes have been seted up on sealing joint's the inner wall, two the screw hole respectively with two fixing bolt is identical, be provided with airtight long tube on the admission line of vacuum air pump, sealed long tube and two fixing bolt looks screw thread adaptation.
As a further proposal of the utility model, one side fixed mounting of inner box has a protective housing, the double-shaft motor is located in the protective housing, two a plurality of plush brushes of evenly distributed on the bull stick.
The utility model provides a cleaning device of hand-held type dust particle counter, beneficial effect lies in:
settle the chamber through the hose, chamber and particle counter are settled to the air pump and are settled the chamber and place each accessory, it fixes each accessory to close inner box and outer container to the ratio, portable and use, two bull sticks of biax motor drive through closed clearance mechanism rotate, thereby make the pappus brush on the bull stick carry out the top layer clearance to the hand-held type dust particle counter that finishes using, avoid long-time dust and the sweat that is infected with to cause the erosion to it, vacuum air pump through vacuum pumping mechanism gets into the inner wall of hand-held type dust particle counter through the hose and carries out the air extraction, bring out the dust simultaneously, can avoid causing the harm to the electronic component inside the hand-held type dust particle counter, through annular buckle and the on hand non-slip area on inner box and the outer container, fix the effect to closed whole device, avoid the landing to cause the harm to the accessory of inside, screw thread sliding into on the airtight long tube of vacuum air pump through the thread chute cooperation two fixing bolt threads on the sealing joint The hose and the vacuum air pump are subjected to airtight operation, air leakage is prevented, the double-shaft motor is protected through the protective shell on one side of the inner box, accidents are prevented, and the surfaces of the handheld dust particle counter can be comprehensively cleaned through the plush brushes which are uniformly distributed on the two rotating rods.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a cleaning device for a handheld dust particle counter according to a preferred embodiment of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
fig. 3 is an enlarged schematic view of a portion B shown in fig. 1.
Reference numbers in the figures: 1. an inner box; 2. an outer box; 3. a particle counter housing chamber; 4. a hose installation cavity; 5. an air pump installation cavity; 6. a double-shaft motor; 7. a main bevel gear; 8. a rotating rod; 9. from the bevel gear; 10. a vacuum air pump; 11. a hose; 12. sealing the joint; 13. fixing the bolt; 14. a first seal cover; 15. butting covers; 16. a handheld dust particle counter; 17. a wind speed probe; 18. a second seal cap; 19. and (4) releasing the valve.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Referring to fig. 1-3, an embodiment of the present invention provides a cleaning device for a handheld dust particle counter, including: an inner case 1; the outer box 2 is hinged to one side of the inner box 1; the particle counter installing cavities 3 are respectively arranged in the inner box 1 and the outer box 2; the two hose arranging cavities 4 are respectively formed in the inner box 1 and the outer box 2; the two air pump mounting cavities 5 are respectively formed in the inner box 1 and the outer box 2; the closed cleaning mechanism is arranged on the inner wall of the inner box 1; the vacuum air pumping cleaning mechanism is arranged on the inner box 1, the cavity 4 is arranged through a hose, the cavity 5 is arranged through an air pump, the cavity 3 is arranged through a particle counter, and the inner box 1 and the outer box 2 are combined and fixed to the accessories, so that the vacuum air pumping cleaning mechanism is convenient to carry and use.
The closed cleaning mechanism comprises a double-shaft motor 6, two main bevel gears 7, two rotating rods 8 and two secondary bevel gears 9, the double-shaft motor 6 is fixedly installed on the outer wall of one side of the inner box 1, the two main bevel gears 7 are respectively installed on two output shafts of the double-shaft motor 6, the two rotating rods 8 are respectively installed on the inner wall of the inner box 1 in a rotating mode, one ends of the two rotating rods 8 extend out of the inner box 1, the two secondary bevel gears 9 are respectively fixedly sleeved at the corresponding two ends of the rotating rods 8 extending out of the inner box 1, the two secondary bevel gears 9 are respectively meshed with the two main bevel gears 7, the double-shaft motor 6 of the closed cleaning mechanism drives the two rotating rods 8 to rotate, and therefore a soft brush on the rotating rods 8 carries out surface layer cleaning on a used handheld dust particle counter 16, avoiding the erosion of the dust and sweat which are polluted by long-time use.
The vacuum air pumping cleaning mechanism comprises a vacuum air pump 10, a hose 11, a sealing joint 12, two fixing bolts 13, a first sealing cover 14, a butt joint cover 15, a handheld dust particle counter 16, an air speed probe 17, a second sealing cover 18 and a pressure release valve 19, wherein the vacuum air pump 10 is arranged in the air pump arrangement cavity 5, the hose 11 is arranged in the hose arrangement cavity 4, the sealing joint 12 is fixedly arranged at the exhaust end of the hose 11, the two fixing bolts 13 are arranged on the sealing joint 12 in a threaded manner, the butt joint cover 15 is fixedly arranged on the inner wall of the top of the first sealing cover 14, the first sealing cover 14 is fixedly arranged at the air inlet end of the hose 11, the handheld dust particle counter 16 is arranged at one side of the inner box 1, and the air speed probe 17 is fixedly arranged at the top of the handheld dust particle counter 16, wind speed probe 17 with butt joint cover 15 butt joint, second sealed cowling 18 fixed mounting be in hand-held type dust particle counter 16's top, just second sealed cowling 18 is located outside wind speed probe 17, relief valve 19 fixed mounting be in on one side outer wall of second sealed cowling 18, vacuum air pump 10 through the vacuum air exhaust mechanism carries out the air extraction through the inner wall that hose 11 got into hand-held type dust particle counter 16, takes the dust out simultaneously, can avoid causing the harm to the electronic component of hand-held type dust particle counter 16 inside.
Annular buckle, two annular buckle looks adaptation are all installed to the bottom of inner box 1 with the top of outer container 2, the bottom of inner box 1 with the handle is all installed at the top of outer container 2, being provided with the antiskid area on hand, through annular buckle on inner box 1 and the outer container 2 and the antiskid area on hand, carrying out the fixed action to closed whole device, avoid the landing to cause the harm to inside accessory.
Two threaded holes are formed in the inner wall of the sealing joint 12 and are matched with the fixing bolts 13 respectively, an airtight long pipe is arranged on an air inlet pipeline of the vacuum air pump 10, the airtight long pipe is matched with the fixing bolts 13 in a threaded manner, the fixing bolts 13 are matched with the sealing slide grooves in the sealing joint 12 in a threaded manner, the threads of the fixing bolts 13 slide into the airtight long pipe of the vacuum air pump 10, and the hose 11 and the vacuum air pump 10 are subjected to airtight operation to prevent gas leakage.
One side fixed mounting of inner box 1 has the protective housing, biax motor 6 is located in the protective housing, two a plurality of pile brushes of evenly distributed on the bull stick 8 protect biax motor 6 through the protective housing of inner box 1 one side, prevent accident, evenly distributed's pile brush can carry out comprehensive clearance to the surface of hand-held type dust particle counter 16 on two bull sticks 8.
The utility model provides a hand-held type dust particle counter's cleaning device's theory of operation as follows:
after the hand-held dust particle counter 16 is used, the hand-held dust particle counter 16 can be placed in the particle counter installation cavity 3 in the inner box 1, the double-shaft motor 6 is started, two output shafts of the double-shaft motor 6 drive two rotating rods 8 to rotate, plush brushes on the two rotating rods 8 start to rotate, the used hand-held dust particle counter 16 is cleaned on the surface, when the inside needs to be cleaned, a sealing joint 12 at one end of a hose 11 is aligned with a sealing long pipe on an air outlet pipeline of the vacuum air pump 10, two fixing bolts 13 are screwed to rotate, the fixing bolts 13 are rotated into the sealing long pipe to be connected in a sealing way, a butt joint cover 15 at the other end of the hose 11 is aligned with an air speed probe 17 to be pressed down, a first sealing cover 14 is driven to be inserted into a second sealing cover 18, the vacuum air pump 10 is started, and the vacuum air pump 10 pumps air inside the hand-held dust particle counter 16 through the hose 11, simultaneously bring out the dust to clear up, after the clearance finishes, open relief valve 19, thereby to the inside pressure release that makes in first sealed cowling 14 and the second sealed cowling 18 of filling air of second sealed cowling 18, thereby extract hose 11, the clearance finishes.
Compared with the prior art, the utility model provides a cleaning device of hand-held type dust particle counter has following beneficial effect:
the utility model provides a cleaning device of a hand-held dust particle counter, which is characterized in that each accessory is placed through a hose placing cavity 4, an air pump placing cavity 5 and a particle counter placing cavity 3, an inner box 1 and an outer box 2 are combined and fixed to each accessory, the cleaning device is convenient to carry and use, a double-shaft motor 6 of a closed cleaning mechanism drives two rotating rods 8 to rotate, so that a soft brush on the rotating rods 8 carries out surface layer cleaning on a used hand-held dust particle counter 16, the phenomenon that the hand-held dust particle counter is corroded by dust and sweat which are infected for a long time is avoided, a vacuum air pump 10 of a vacuum air pumping mechanism enters the inner wall of the hand-held dust particle counter 16 through a hose 11 to carry out air extraction, meanwhile, the dust is taken out, the damage to electronic elements inside the hand-held dust particle counter 16 can be avoided, and through an annular buckle on the inner box 1 and the outer box 2 and an anti-skid belt on a handle, carry out the fixed action to closed whole device, avoid the landing to cause the harm to inside accessory, slide into on the airtight long tube of vacuum air pump 10 through the screw thread spout cooperation two fixing bolt 13 screw threads on sealing joint 12, carry out airtight operation to hose 11 and vacuum air pump 10, prevent gas leakage, protect biax motor 6 through the protective housing of inner box 1 one side, prevent accident, evenly distributed's plush brush can carry out comprehensive clearance to handheld dust particle counter 16's surface on two bull sticks 8.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (6)
1. A cleaning device for a hand-held dust particle counter, comprising:
an inner box;
the outer box is hinged to one side of the inner box;
the particle counter installing cavities are respectively arranged in the inner box and the outer box;
the two hose arranging cavities are respectively arranged in the inner box and the outer box;
the two air pump mounting cavities are respectively arranged in the inner box and the outer box;
the closed cleaning mechanism is arranged on the inner wall of the inner box;
and the vacuum air pumping and cleaning mechanism is arranged on the inner box.
2. The device of claim 1, wherein the closed cleaning mechanism comprises a dual-shaft motor, two main bevel gears, two rotating rods, and two secondary bevel gears, the dual-shaft motor is fixedly mounted on an outer wall of one side of the inner box, the two main bevel gears are respectively mounted on two output shafts of the dual-shaft motor, the two rotating rods are rotatably mounted on an inner wall of the inner box, one ends of the two rotating rods extend out of the inner box, the two secondary bevel gears are respectively fixedly sleeved on one ends of the two rotating rods extending out of the inner box, and the two secondary bevel gears are respectively engaged with the two main bevel gears.
3. The cleaning device for the handheld dust particle counter according to claim 1, wherein the vacuum pumping cleaning mechanism comprises a vacuum air pump, a hose, a sealing joint, two fixing bolts, a first sealing cover, a butt joint cover, the handheld dust particle counter, an air speed probe, a second sealing cover and a pressure release valve, the vacuum air pump is arranged in the air pump installation cavity, the hose is arranged in the hose installation cavity, the sealing joint is fixedly arranged at the exhaust end of the hose, the two fixing bolts are both arranged on the sealing joint in a threaded manner, the butt joint cover is fixedly arranged on the inner wall of the top of the first sealing cover, the first sealing cover is fixedly arranged on the air inlet end of the hose, the handheld dust particle counter is arranged at one side of the inner box, and the air speed probe is fixedly arranged at the top of the handheld dust particle counter, the wind speed probe is in butt joint with the butt joint cover, the second sealing cover is fixedly installed at the top of the handheld dust particle counter, the second sealing cover is located outside the wind speed probe, and the pressure release valve is fixedly installed on the outer wall of one side of the second sealing cover.
4. The device of claim 1, wherein the bottom of the inner box and the top of the outer box are each fitted with a ring-shaped snap, and the two snap fits together, and the bottom of the inner box and the top of the outer box are each fitted with a handle, and the handle is provided with an anti-slip belt.
5. The cleaning device for the handheld dust particle counter according to claim 3, wherein the inner wall of the sealing joint is provided with two threaded holes, the two threaded holes are respectively matched with the two fixing bolts, the air inlet pipe of the vacuum air pump is provided with a sealed long pipe, and the sealed long pipe is in threaded fit with the two fixing bolts.
6. The cleaning device for the handheld dust particle counter according to claim 2, wherein a protective shell is fixedly mounted on one side of the inner box, the double-shaft motor is located in the protective shell, and a plurality of plush brushes are uniformly distributed on the two rotating rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121487825.2U CN215278740U (en) | 2021-07-01 | 2021-07-01 | Cleaning device of hand-held type dust particle counter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121487825.2U CN215278740U (en) | 2021-07-01 | 2021-07-01 | Cleaning device of hand-held type dust particle counter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215278740U true CN215278740U (en) | 2021-12-24 |
Family
ID=79520026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121487825.2U Expired - Fee Related CN215278740U (en) | 2021-07-01 | 2021-07-01 | Cleaning device of hand-held type dust particle counter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215278740U (en) |
-
2021
- 2021-07-01 CN CN202121487825.2U patent/CN215278740U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9539624B2 (en) | Hole cleaning apparatus and method | |
| CN215278740U (en) | Cleaning device of hand-held type dust particle counter | |
| CN108815691A (en) | A kind of multi-functional dermatology's coating equipment | |
| CN207981763U (en) | A kind of Aluminum cover cleaner | |
| CN220703786U (en) | Semiconductor coating equipment | |
| CN218340133U (en) | Paint spraying device for processing tubular workpiece | |
| CN115673629A (en) | One-way flame proof valve body welding set | |
| CN114992529A (en) | Intelligent gas pipeline with air pressure detection function | |
| CN214865918U (en) | Purging and cleaning device | |
| CN102491247B (en) | Pneumatic liquid material conveying device | |
| CN205421943U (en) | Electronic hydraulic pressure slip casting machine of cam -type | |
| CN109047138B (en) | Electronic component belt cleaning device | |
| CN203900050U (en) | Three-dimensional rotary cleaning device applied to food processing industry | |
| CN215674740U (en) | Closed exhaust system is protected to pump environment | |
| CN111167649A (en) | Spraying storage device | |
| CN216171230U (en) | Energy-concerving and environment-protective type useless temporary storage storehouse waste gas collection device | |
| CN205421993U (en) | Electronic hydraulic pressure slip casting machine of opposed double cam | |
| CN221288407U (en) | Anti-blocking structure and high-viscosity coating spraying device thereof | |
| CN221673682U (en) | Filter element cleaning device | |
| CN213370474U (en) | Atomizer with human moisturizing effect | |
| TW202043663A (en) | Adapter and device for automatic replacement adapter | |
| CN213078899U (en) | Automatic paint spraying equipment for inner wall of circular tube | |
| CN115106238B (en) | Paint spraying box for paint spraying of semitrailer chassis | |
| CN216591097U (en) | Portable pressure monitoring device for natural gas pipeline | |
| CN218400492U (en) | Car washer pressure boost structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211224 |