JPH0542450Y2 - - Google Patents
Info
- Publication number
- JPH0542450Y2 JPH0542450Y2 JP12220589U JP12220589U JPH0542450Y2 JP H0542450 Y2 JPH0542450 Y2 JP H0542450Y2 JP 12220589 U JP12220589 U JP 12220589U JP 12220589 U JP12220589 U JP 12220589U JP H0542450 Y2 JPH0542450 Y2 JP H0542450Y2
- Authority
- JP
- Japan
- Prior art keywords
- correct answer
- display device
- white
- answer
- board
- 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 - Lifetime
Links
- 238000005192 partition Methods 0.000 claims description 2
- 238000013459 approach Methods 0.000 claims 1
- 239000002184 metal Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
Landscapes
- Electrically Operated Instructional Devices (AREA)
- Drawing Aids And Blackboards (AREA)
- Toys (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12220589U JPH0542450Y2 (en]) | 1989-10-20 | 1989-10-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12220589U JPH0542450Y2 (en]) | 1989-10-20 | 1989-10-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0262463U JPH0262463U (en]) | 1990-05-10 |
| JPH0542450Y2 true JPH0542450Y2 (en]) | 1993-10-26 |
Family
ID=31369917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12220589U Expired - Lifetime JPH0542450Y2 (en]) | 1989-10-20 | 1989-10-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0542450Y2 (en]) |
-
1989
- 1989-10-20 JP JP12220589U patent/JPH0542450Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0262463U (en]) | 1990-05-10 |
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