KR910005672U - Hair eraser for blackboard - Google Patents
Hair eraser for blackboardInfo
- Publication number
- KR910005672U KR910005672U KR2019890013911U KR890013911U KR910005672U KR 910005672 U KR910005672 U KR 910005672U KR 2019890013911 U KR2019890013911 U KR 2019890013911U KR 890013911 U KR890013911 U KR 890013911U KR 910005672 U KR910005672 U KR 910005672U
- Authority
- KR
- South Korea
- Prior art keywords
- eraser
- blackboard
- hair
- hair eraser
- Prior art date
Links
Classifications
-
- 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
-
- 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
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L21/00—Blackboard or slate cleaning devices
- B43L21/02—Blackboard or slate cleaning devices with means for absorbing the chalk dust
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019890013911U KR910007436Y1 (en) | 1989-09-25 | 1989-09-25 | Chalk eraser |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019890013911U KR910007436Y1 (en) | 1989-09-25 | 1989-09-25 | Chalk eraser |
Publications (2)
Publication Number | Publication Date |
---|---|
KR910005672U true KR910005672U (en) | 1991-04-22 |
KR910007436Y1 KR910007436Y1 (en) | 1991-09-27 |
Family
ID=19290246
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR2019890013911U KR910007436Y1 (en) | 1989-09-25 | 1989-09-25 | Chalk eraser |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR910007436Y1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108045136A (en) * | 2018-01-10 | 2018-05-18 | 西安航空学院 | A kind of novel blackboard eraser |
CN114194723A (en) * | 2021-12-25 | 2022-03-18 | 陈燕 | Teaching aid storage device and method capable of removing chalk dust |
-
1989
- 1989-09-25 KR KR2019890013911U patent/KR910007436Y1/en not_active IP Right Cessation
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108045136A (en) * | 2018-01-10 | 2018-05-18 | 西安航空学院 | A kind of novel blackboard eraser |
CN108045136B (en) * | 2018-01-10 | 2023-09-26 | 西安航空学院 | Novel blackboard eraser |
CN114194723A (en) * | 2021-12-25 | 2022-03-18 | 陈燕 | Teaching aid storage device and method capable of removing chalk dust |
Also Published As
Publication number | Publication date |
---|---|
KR910007436Y1 (en) | 1991-09-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E701 | Decision to grant or registration of patent right | ||
REGI | Registration of establishment | ||
FPAY | Annual fee payment |
Payment date: 19960924 Year of fee payment: 6 |
|
LAPS | Lapse due to unpaid annual fee |