JPH0223430Y2 - - Google Patents
Info
- Publication number
- JPH0223430Y2 JPH0223430Y2 JP6516684U JP6516684U JPH0223430Y2 JP H0223430 Y2 JPH0223430 Y2 JP H0223430Y2 JP 6516684 U JP6516684 U JP 6516684U JP 6516684 U JP6516684 U JP 6516684U JP H0223430 Y2 JPH0223430 Y2 JP H0223430Y2
- Authority
- JP
- Japan
- Prior art keywords
- powder
- chiyoke
- receiving box
- gutter
- blackboard
- 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
Links
- 239000000843 powder Substances 0.000 claims description 21
- 239000000428 dust Substances 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Drawing Aids And Blackboards (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6516684U JPS60178189U (ja) | 1984-05-02 | 1984-05-02 | 黒板のチヨ−ク粉清掃装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6516684U JPS60178189U (ja) | 1984-05-02 | 1984-05-02 | 黒板のチヨ−ク粉清掃装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60178189U JPS60178189U (ja) | 1985-11-26 |
| JPH0223430Y2 true JPH0223430Y2 (en]) | 1990-06-26 |
Family
ID=30596916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6516684U Granted JPS60178189U (ja) | 1984-05-02 | 1984-05-02 | 黒板のチヨ−ク粉清掃装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60178189U (en]) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2503221Y2 (ja) * | 1989-12-28 | 1996-06-26 | コクヨ株式会社 | 黒 板 |
-
1984
- 1984-05-02 JP JP6516684U patent/JPS60178189U/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60178189U (ja) | 1985-11-26 |
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