KR870018233U - 상하 이동식 칠판 - Google Patents
상하 이동식 칠판Info
- Publication number
- KR870018233U KR870018233U KR2019860007656U KR860007656U KR870018233U KR 870018233 U KR870018233 U KR 870018233U KR 2019860007656 U KR2019860007656 U KR 2019860007656U KR 860007656 U KR860007656 U KR 860007656U KR 870018233 U KR870018233 U KR 870018233U
- Authority
- KR
- South Korea
- Prior art keywords
- down removable
- removable blackboard
- blackboard
- removable
- Prior art date
Links
Classifications
-
- 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
- B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
- B43L1/04—Blackboards
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019860007656U KR890002931Y1 (ko) | 1986-05-30 | 1986-05-30 | 상하 이동식 칠판 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019860007656U KR890002931Y1 (ko) | 1986-05-30 | 1986-05-30 | 상하 이동식 칠판 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR870018233U true KR870018233U (ko) | 1987-12-23 |
KR890002931Y1 KR890002931Y1 (ko) | 1989-05-10 |
Family
ID=19252261
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR2019860007656U KR890002931Y1 (ko) | 1986-05-30 | 1986-05-30 | 상하 이동식 칠판 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR890002931Y1 (ko) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100838162B1 (ko) * | 2006-12-18 | 2008-06-13 | 이호균 | 승강가능한 복수의 화이트보드 시스템 |
KR102203892B1 (ko) * | 2020-06-22 | 2021-01-14 | 이성연 | 교차 칠판 |
-
1986
- 1986-05-30 KR KR2019860007656U patent/KR890002931Y1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR890002931Y1 (ko) | 1989-05-10 |
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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: 19941230 Year of fee payment: 9 |
|
LAPS | Lapse due to unpaid annual fee |