CN217550569U - Blackboard eraser deashing equipment - Google Patents

Blackboard eraser deashing equipment Download PDF

Info

Publication number
CN217550569U
CN217550569U CN202221031484.2U CN202221031484U CN217550569U CN 217550569 U CN217550569 U CN 217550569U CN 202221031484 U CN202221031484 U CN 202221031484U CN 217550569 U CN217550569 U CN 217550569U
Authority
CN
China
Prior art keywords
frame
fixing
spring
blackboard eraser
shell
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
Application number
CN202221031484.2U
Other languages
Chinese (zh)
Inventor
李洪振
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN202221031484.2U priority Critical patent/CN217550569U/en
Application granted granted Critical
Publication of CN217550569U publication Critical patent/CN217550569U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Drawing Aids And Blackboards (AREA)

Abstract

The utility model relates to an ash removal equipment especially relates to a blackboard eraser ash removal equipment. The utility model provides a clearance effect is better, the less blackboard eraser deashing equipment of dust among the simultaneous cleaning process. The utility model provides a such blackboard eraser deashing equipment, including first shell, first mount, first pivot and first gear, first shell inner wall middle part is equipped with first mount, and first mount middle part rotary type is equipped with first pivot, and first pivot is connected with first shell rear side middle part rotary type, and first pivot middle part is equipped with first gear. The utility model discloses a be equipped with placement mechanism, placement mechanism and clamping mechanism cooperation, clamping mechanism can press from both sides tightly the blackboard eraser, and placement mechanism can bear clamping mechanism, and then can conveniently carry out the blackboard eraser clearance operation to can improve the efficiency of blackboard eraser clearance.

Description

Blackboard eraser deashing equipment
Technical Field
The utility model relates to an ash removal equipment especially relates to a blackboard eraser ash removal equipment.
Background
The blackboard eraser is a comparatively common teaching aid, is used for clearing up the blackboard writing on the blackboard usually, and the blackboard eraser generally is formed by plastics and sponge cloth preparation, and the blackboard eraser is fine to the effect of wiping of chalk, but cleans the back, can remain chalk dust on the blackboard eraser, and these chalk dust are cleared up comparatively inconveniently, and current clearance mode exists mostly that the clearance effect is relatively poor, and the great shortcoming of dust among the clearance process moreover.
Aiming at the defects in the prior art, the blackboard eraser dust cleaning equipment which is good in cleaning effect and small in dust in the cleaning process is provided.
SUMMERY OF THE UTILITY MODEL
In order to overcome the shortcoming that the cleaning effect is poor and the dust in the cleaning process is large, the technical problem is as follows: the blackboard eraser dust removal equipment is good in cleaning effect and small in dust in the cleaning process.
The utility model provides a blackboard eraser deashing equipment, including first shell, first mount, first pivot, first gear, the pappus brush, the second mount, the second pivot, second gear and rocking handle, first shell inner wall middle part is equipped with first mount, first mount middle part rotary type is equipped with first pivot, first pivot is connected with first shell rear side middle part rotary type, first pivot middle part is equipped with first gear, first pivot front end is equipped with the pappus brush, first shell inner wall rear side middle part is equipped with the second mount, the last rotary type of second mount is equipped with the second pivot, the second pivot is connected with first shell rear side rotary type, second pivot front portion is equipped with the second gear, second gear and first gear engagement, second pivot rear end is connected with the rocking handle, still including placing mechanism and clamping mechanism, first shell middle part slidingtype is equipped with placing mechanism, be equipped with clamping mechanism in the placing mechanism.
As preferred, the placing mechanism includes first dead lever, first spring, places frame and handle, and the first shell middle part left and right sides all is equipped with first dead lever, and the slidingtype is equipped with between two first dead levers and places the frame, places frame and first shell sliding type connection, all overlaps on two first dead levers and is equipped with first spring, and first spring both ends are connected respectively on placing frame and first shell, and it is equipped with the handle to place frame front side middle part.
Preferably, the clamping mechanism comprises a first fixing block, a clamping frame, a pull rod, a second spring and a clamping plate, the first fixing block is arranged in the middle of the inner wall of the front side of the placing frame, the clamping frame is arranged on the rear side of the first fixing block, the pull rod is slidably arranged on the upper portion of the clamping frame, the second spring is sleeved on the middle of the pull rod, two ends of the second spring are respectively connected to the clamping frame and the pull rod, the clamping plate is connected to the bottom of the clamping frame, and the clamping plate is matched with the pull rod.
As preferred, still including the mechanism of adding water, the mechanism of adding water all is equipped with the second fixed block including second fixed block, water pipe and gondola water faucet, the first shell left and right sides, all is equipped with the water pipe on two second fixed blocks, and the water pipe is connected with first shell upper portion, and two water pipe upper portions all are equipped with the gondola water faucet.
Preferably, still including storage mechanism, storage mechanism is including the second shell, the third fixed block, the connecting rod, the third spring, flip, the second dead lever, fourth spring and wedge, the first shell top is equipped with the second shell, second shell top front side interval is equipped with two third fixed blocks, the rotary type is equipped with the connecting rod between two third fixed blocks, the connecting rod middle part is equipped with flip, flip and the cooperation of second shell, the connecting rod left and right sides all overlaps and is equipped with the third spring, the third spring both ends are connected respectively on flip and third fixed block, the anterior left and right sides of second shell all is equipped with the second dead lever, two second dead lever front portions all are equipped with the fourth spring, two fourth spring inner all are connected with the wedge, wedge and flip cooperation.
Preferably, the collecting and discharging device comprises a collecting frame, a plug and a handle, the collecting frame is arranged on the lower portion of the first shell in a sliding mode, the collecting frame is matched with the placing frame, the plug is arranged on the right portion of the front side of the collecting frame in a sliding mode, and the handle is arranged in the middle of the front side of the collecting frame.
The utility model has the advantages that:
1. the utility model is provided with the placing mechanism which is matched with the clamping mechanism, the clamping mechanism can clamp the blackboard eraser, the placing mechanism can bear the clamping mechanism, and further the blackboard eraser cleaning operation can be conveniently carried out, thereby improving the efficiency of cleaning the blackboard eraser;
2. the water adding mechanism is arranged, and the water adding mechanism sprays water in the cleaning process, so that the cleaning effect of the blackboard eraser can be improved;
3. the storage mechanism is arranged, so that the blackboard eraser can be stored, and the convenience of the blackboard eraser cleaning operation can be further improved;
4. by arranging the collecting and discharging mechanism, the collecting and discharging mechanism can collect the dirty water and the dirty water, so that people can conveniently and intensively clean the dirty water and the dirty water.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic view of a partial three-dimensional structure of the present invention.
Fig. 3 is a schematic view of the three-dimensional structure of the placing mechanism of the present invention.
Fig. 4 is a schematic view of a three-dimensional structure of the clamping mechanism of the present invention.
Fig. 5 is a schematic view of the three-dimensional structure of the water adding mechanism of the present invention.
Fig. 6 is a schematic view of a three-dimensional structure of the storage mechanism of the present invention.
Fig. 7 is a schematic view of the three-dimensional structure of the collecting and discharging mechanism of the present invention.
Description of reference numerals: 1: first housing, 2: first mount, 3: first rotation shaft, 4: first gear, 5: soft brush, 6: second mount, 7: second rotation shaft, 8: second gear, 9: rocking handle, 10: placement mechanism, 101: first fixing lever, 102: first spring, 103: placement frame, 104: handle, 11: clamping mechanism, 1101: first fixing block, 1102: clamping frame, 1103: a pull rod, 1104: second spring, 1105: clamping plate, 12: water adding mechanism, 1201: second fixed block, 1202: water pipe, 1203: gondola water faucet, 13: storage mechanism, 1301: second housing, 1302: third fixed block, 1303: connecting rod, 1304: third spring, 1305: flip cover, 1306: second fixing bar, 1307: fourth spring, 1308: wedge block, 14: collection and discharge mechanism, 1401: collection box, 1402: plug, 1403: a handle.
Detailed Description
Embodiments of the present invention will be described below with reference to the drawings.
Example 1
A blackboard eraser dust cleaning device is shown in figures 1-4 and comprises a first shell 1, a first fixing frame 2, a first rotating shaft 3, a first gear 4, a soft hairbrush 5, a second fixing frame 6, a second rotating shaft 7, a second gear 8, a rocking handle 9, a placing mechanism 10 and a clamping mechanism 11, wherein the first fixing frame 2 is arranged in the middle of the inner wall of the first shell 1, the first rotating shaft 3 is rotatably arranged in the middle of the first fixing frame 2, the first rotating shaft 3 is rotatably connected with the middle of the rear side of the first shell 1, the first gear 4 is arranged in the middle of the first rotating shaft 3, the soft hairbrush 5 is arranged at the front end of the first rotating shaft 3, the second fixing frame 6 is arranged in the middle of the rear side of the inner wall of the first shell 1, the second rotating shaft 7 is rotatably arranged on the second fixing frame 6, the second rotating shaft 7 is rotatably connected with the rear side of the first shell 1, the second rotating shaft 7 is provided with the second gear 8 in front of the second rotating shaft 7, the second gear 8 is meshed with the first gear 4, the second rocking handle 9 is connected with the rear end of the second rotating shaft 7, the placing mechanism 10 is arranged in the middle of the first shell 1, and the sliding type placing mechanism 11 is arranged in the placing mechanism 10.
When people need to clean the blackboard eraser, people can firstly pull out the placing mechanism 10 to the front side, then people can pull out the clamping mechanism 11, then people can place the blackboard eraser on the clamping mechanism 11, when the blackboard eraser is placed at a proper position, people can enable the clamping mechanism 11 to move and reset, then the clamping mechanism 11 can clamp the blackboard eraser, then people can push the placing mechanism 10 to move and reset to the rear side, after the placing mechanism 10 resets, people can rotate the rocking handle 9 and further drive the second rotating shaft 7 to rotate, so that the second gear 8 can be driven to rotate, and further the first gear 4 can be driven to rotate, the first rotating shaft 3 can be driven to rotate by the first gear 4, and further the soft brush 5 can be driven to rotate, so that the blackboard eraser can be cleaned, after the blackboard eraser is cleaned, people can stop rotating the rocking handle 9, then people can pull out the placing mechanism 10 to the front side again, and further take out the blackboard eraser from the clamping mechanism 11, and when people need to clean the blackboard eraser repeatedly.
Placing mechanism 10 is including first dead lever 101, first spring 102, place frame 103 and handle 104, and the 1 middle part left and right sides of first shell all is equipped with first dead lever 101, and slidingtype is equipped with between two first dead levers 101 places frame 103, places frame 103 and 1 sliding type of first shell and is connected, all overlaps on two first dead levers 101 and is equipped with first spring 102, and first spring 102 both ends are connected respectively on placing frame 103 and first shell 1, and it is equipped with handle 104 to place frame 103 front side middle part.
When people need to place the blackboard eraser, people can pull the handle 104 to the front side to further drive the placing frame 103 to move to the front side, the first spring 102 is stretched, when the placing frame 103 moves to a proper position to the front side, people can pull the clamping mechanism 11 open, then people can place the blackboard eraser on the clamping mechanism 11 to be clamped, when the blackboard eraser is stabilized to a proper position, people can release the handle 104, the first spring 102 is reset, further the placing frame 103 can be driven to move to the rear side to reset, the clamping mechanism 11 can be driven to move to the rear side, further the blackboard eraser can be driven to move to the rear side, and then people can clean the blackboard eraser.
The clamping mechanism 11 comprises a first fixing block 1101, a clamping frame 1102, a pull rod 1103, a second spring 1104 and a clamping plate 1105, the first fixing block 1101 is arranged in the middle of the inner wall of the front side of the placing frame 103, the clamping frame 1102 is arranged on the rear side of the first fixing block 1101, the pull rod 1103 is arranged on the upper portion of the clamping frame 1102 in a sliding mode, the second spring 1104 is sleeved on the middle of the pull rod 1103, two ends of the second spring 1104 are connected to the clamping frame 1102 and the pull rod 1103 respectively, the clamping plate 1105 is connected to the bottom of the clamping frame 1102, and the clamping plate 1105 is matched with the pull rod 1103.
After placing frame 103 and moving to suitable position to the front side, people can upwards pull rod 1103, second spring 1104 is compressed, after pull rod 1103 upwards moves to suitable position, people alright place the blackboard eraser between pinch plate 1105 and pull rod 1103, then people can unclamp pull rod 1103, second spring 1104 resets, and then can make pull rod 1103 move downwards and reset, thereby alright cooperation is pressed from both sides pinch plate 1102 and is stabilized the blackboard eraser, and then can carry out the blackboard eraser clearance, after the blackboard eraser clearance is accomplished, people can upwards pull rod 1103 once more, after pull rod 1103 separates with the blackboard eraser, people alright take off the blackboard eraser.
Example 2
In a preferred embodiment of the present invention, as shown in fig. 1 and fig. 5-7, the present invention further comprises a water adding mechanism 12, the water adding mechanism 12 comprises a second fixing block 1201, a water pipe 1202 and a shower 1203, the second fixing block 1201 is disposed on both sides of the first housing 1, the water pipes 1202 are disposed on the two second fixing blocks 1201, the water pipe 1202 is connected to the upper portion of the first housing 1, and the shower 1203 is disposed on the upper portions of the two water pipes 1202.
When the blackboard eraser is cleaned, clear water can be introduced into the water pipe 1202 by people, and then water can be sprayed downwards through the sprinkler 1203, so that the blackboard eraser can be cleaned by matching with the soft brush 5, and after the blackboard eraser is cleaned, the water can be temporarily stopped from being introduced into the water pipe 1202 by people.
The storage mechanism 13 comprises a second shell 1301, third fixing blocks 1302, a connecting rod 1303, third springs 1304, a turnover cover 1305, second fixing rods 1306, fourth springs 1307 and wedge blocks 1308, the second shell 1301 is arranged at the top of the first shell 1, the two third fixing blocks 1302 are arranged at the front side of the top of the second shell 1301 at intervals, the connecting rod 1303 is rotatably arranged between the two third fixing blocks 1302, the turnover cover 1305 is arranged in the middle of the connecting rod 1303 and matched with the second shell 1301, the third springs 1304 are sleeved on the left side and the right side of the connecting rod 1303, two ends of each third spring 1304 are respectively connected to the turnover cover 1305 and the corresponding third fixing block 1302, the second fixing rods 1306 are arranged on the left side and the right side of the front portion of the second shell 1301, the fourth springs 1307 are arranged on the front portions of the two second fixing rods 1306, the inner ends of the two fourth springs 1307 are connected with the wedge blocks 1308, and the wedge blocks 1308 are matched with the turnover cover 1305.
When people need to temporarily store the blackboard eraser, people can swing the turnover cover 1305 upwards, the third spring 1304 deforms, the turnover cover 1305 swings upwards to extrude the wedge-shaped block 1308 towards the outer side, the fourth spring 1307 is compressed, after the turnover cover 1305 swings upwards to a proper position, people can put the blackboard eraser into the second shell 1301, after the blackboard eraser is placed, people can relax the turnover cover 1305, the third spring 1304 resets, and then the turnover cover 1305 can be driven to swing downwards to reset, after the turnover cover 1305 swings downwards to reset, people can relax the wedge-shaped block 1308, the fourth spring 1307 resets, and then the wedge-shaped block 1308 can be driven to move inwards to reset, so that the wedge-shaped block 1308 can be clamped with the turnover cover 1305 again, and then the blackboard eraser can be temporarily stored.
The collecting and discharging device 14 is further included, the collecting and discharging device 14 comprises a collecting frame 1401, a plug 1402 and a handle 1403, the collecting frame 1401 is arranged on the lower portion of the first shell 1 in a sliding mode, the collecting frame 1401 is matched with the placing frame 103, the plug 1402 is arranged on the right portion of the front side of the collecting frame 1401 in a sliding mode, and the handle 1403 is arranged in the middle of the front side of the collecting frame 1401.
When people clean the blackboard eraser, dirt and sewage can fall into the collection frame 1401 through the placing frame 103, when people need to treat the sewage in the collection frame 1401, people can pull the plug 1402 to the front side, and then the sewage can flow out of the collection frame 1401, so that people can conveniently perform centralized treatment, after the sewage treatment is completed, people can put the plug 1402 to the original position, when people need to clean the dirt, people can pull the handle 1403 to the front side, and then the collection frame 1401 can be driven to move to the front side, when the collection frame 1401 moves to the front side to be separated from the first shell 1, people can clean the dirt, and after the dirt is cleaned, people can place the collection frame 1401 to the original position.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims (6)

1. A dust cleaning device for a blackboard eraser comprises a first shell (1), a first fixing frame (2), a first rotating shaft (3), a first gear (4), a soft hairbrush (5), a second fixing frame (6), a second rotating shaft (7), a second gear (8) and a rocking handle (9), wherein the first fixing frame (2) is arranged in the middle of the inner wall of the first shell (1), the first rotating shaft (3) is rotatably arranged in the middle of the first fixing frame (2), the first rotating shaft (3) is rotatably connected with the middle of the rear side of the first shell (1), the first gear (4) is arranged in the middle of the first rotating shaft (3), the soft hairbrush (5) is arranged at the front end of the first rotating shaft (3), the second fixing frame (6) is arranged in the middle of the rear side of the inner wall of the first shell (1), the second rotating shaft (7) is rotatably arranged on the second fixing frame (6), the second rotating shaft (7) is rotatably connected with the rear side of the first shell (1), the second gear (8) is arranged at the front part of the second rotating shaft (7), the second gear (8) is meshed with the first gear (4), and the rear rocking handle (9) is connected with the second rotating shaft (7), the device is characterized by further comprising a placing mechanism (10) and a clamping mechanism (11), wherein the placing mechanism (10) is arranged in the middle of the first shell (1) in a sliding mode, and the clamping mechanism (11) is arranged in the placing mechanism (10).
2. The blackboard eraser dust cleaning equipment according to claim 1, wherein the placing mechanism (10) comprises a first fixing rod (101), a first spring (102), a placing frame (103) and a handle (104), the first fixing rod (101) is arranged on each of the left and right sides of the middle of the first casing (1), the placing frame (103) is arranged between the two first fixing rods (101) in a sliding manner, the placing frame (103) is connected with the first casing (1) in a sliding manner, the first spring (102) is sleeved on each of the two first fixing rods (101), two ends of the first spring (102) are respectively connected to the placing frame (103) and the first casing (1), and the handle (104) is arranged in the middle of the front side of the placing frame (103).
3. The blackboard eraser dust cleaning device according to claim 2, wherein the clamping mechanism (11) comprises a first fixing block (1101), a clamping frame (1102), a pull rod (1103), a second spring (1104) and a clamping plate (1105), the first fixing block (1101) is arranged in the middle of the inner wall of the front side of the placement frame (103), the clamping frame (1102) is arranged on the rear side of the first fixing block (1101), the pull rod (1103) is slidably arranged on the upper portion of the clamping frame (1102), the second spring (1104) is sleeved in the middle of the pull rod (1103), two ends of the second spring (1104) are respectively connected to the clamping frame (1102) and the pull rod (1103), the clamping plate (1105) is connected to the bottom of the clamping frame (1102), and the clamping plate (1105) is matched with the pull rod (1103).
4. The blackboard eraser soot cleaning device according to claim 3, further comprising a water adding mechanism (12), wherein the water adding mechanism (12) comprises a second fixing block (1201), a water pipe (1202) and a shower head (1203), the second fixing blocks (1201) are arranged on the left side and the right side of the first casing (1), the water pipes (1202) are arranged on the two second fixing blocks (1201), the water pipe (1202) is connected with the upper portion of the first casing (1), and the shower head (1203) is arranged on the upper portions of the two water pipes (1202).
5. The blackboard eraser dust cleaning device according to claim 4, characterized by further comprising a storage mechanism (13), wherein the storage mechanism (13) comprises a second housing (1301), a third fixing block (1302), a connecting rod (1303), a third spring (1304), a flip cover (1305), a second fixing rod (1306), a fourth spring (1307) and a wedge block (1308), the second housing (1301) is arranged at the top of the first housing (1), two third fixing blocks (1302) are arranged at intervals on the front side of the top of the second housing (1301), the connecting rod (1303) is rotatably arranged between the two third fixing blocks (1302), the flip cover (1305) is arranged in the middle of the connecting rod (1303), the flip cover (1305) is matched with the second housing (1301), the third spring (1304) is sleeved on the left side and the right side of the connecting rod (1303), two ends of the third spring (1304) are respectively connected to the flip cover (1305) and the third fixing block (1302), the second fixing rod (1306) is arranged on the left side and the right side of the front of the second housing (1301), two springs (1306) are respectively provided with the fourth spring (1307), the four spring (1307) is connected with the wedge block 1308, and the inner end of the wedge block (1308) is connected to the flip cover (1308).
6. The blackboard eraser soot cleaning device according to claim 5, further comprising a collecting and discharging mechanism (14), wherein the collecting and discharging mechanism (14) comprises a collecting frame (1401), a plug (1402) and a handle (1403), the collecting frame (1401) is slidably arranged at the lower part of the first casing (1), the collecting frame (1401) is matched with the placing frame (103), the plug (1402) is slidably arranged at the right part of the front side of the collecting frame (1401), and the handle (1403) is arranged at the middle part of the front side of the collecting frame (1401).
CN202221031484.2U 2022-04-29 2022-04-29 Blackboard eraser deashing equipment Expired - Fee Related CN217550569U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202221031484.2U CN217550569U (en) 2022-04-29 2022-04-29 Blackboard eraser deashing equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202221031484.2U CN217550569U (en) 2022-04-29 2022-04-29 Blackboard eraser deashing equipment

Publications (1)

Publication Number Publication Date
CN217550569U true CN217550569U (en) 2022-10-11

Family

ID=83472072

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202221031484.2U Expired - Fee Related CN217550569U (en) 2022-04-29 2022-04-29 Blackboard eraser deashing equipment

Country Status (1)

Country Link
CN (1) CN217550569U (en)

Similar Documents

Publication Publication Date Title
CN215749769U (en) Be used for pottery throwing device
CN108262322B (en) Milk bottle cleaning equipment for obstetrics and gynecology department
CN112517579A (en) Medical glass test tube cleaning and disinfecting equipment for nursing
CN112122224B (en) Sugarcane leaf belt cleaning device
CN113844608B (en) Ship deck cleaning device
CN112439748A (en) Device for cleaning sludge and stains on outer surface of pipeline
CN116748189A (en) Power supply facility cleaning mechanism
CN112735303A (en) Environment-friendly and energy-saving advertising board convenient to clean
CN217550569U (en) Blackboard eraser deashing equipment
CN113305075A (en) But municipal administration bill-board of automatically cleaning
CN210553813U (en) Teaching blackboard with blackboard eraser
CN112056761A (en) Dining table capable of quickly collecting and cleaning table top
CN109261555B (en) Wax image cleaner for cleaning exposed arm surface of figure wax image
CN108113599B (en) Dual-purpose mop for mopping and sweeping floor
CN215198445U (en) Surface dust removal device for optical lens processing
CN114917645A (en) Plastic pipe convenient for sewage discharge
CN210751741U (en) Industrial dust collector convenient to clean
CN214449872U (en) Quick clear combination formula blackboard
CN112874271A (en) Clean peculiar smell device that removes of air conditioner filter core for new energy automobile
CN210185517U (en) Pot washing device
CN114247719A (en) Be used for clean cleaning equipment of using of arc toughened glass
CN113319038A (en) Industrial part self-cleaning device
CN113854596A (en) Processing is with vibrations formula screening mud peanut cleaning equipment that removes
CN112145481A (en) Fan casing belt cleaning device
CN221461367U (en) Toilet dirt cleaning device

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20221011

CF01 Termination of patent right due to non-payment of annual fee