JPH01171477U - - Google Patents
Info
- Publication number
- JPH01171477U JPH01171477U JP6272188U JP6272188U JPH01171477U JP H01171477 U JPH01171477 U JP H01171477U JP 6272188 U JP6272188 U JP 6272188U JP 6272188 U JP6272188 U JP 6272188U JP H01171477 U JPH01171477 U JP H01171477U
- Authority
- JP
- Japan
- Prior art keywords
- opaque
- text
- textbook
- utility
- scope
- 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.)
- Granted
Links
- 230000001737 promoting effect Effects 0.000 claims description 2
- 230000001788 irregular Effects 0.000 description 1
Landscapes
- Electrically Operated Instructional Devices (AREA)
- Toys (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988062721U JPH064368Y2 (ja) | 1988-05-12 | 1988-05-12 | 教科習得促進具 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988062721U JPH064368Y2 (ja) | 1988-05-12 | 1988-05-12 | 教科習得促進具 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01171477U true JPH01171477U (lt) | 1989-12-05 |
| JPH064368Y2 JPH064368Y2 (ja) | 1994-02-02 |
Family
ID=31288285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988062721U Expired - Lifetime JPH064368Y2 (ja) | 1988-05-12 | 1988-05-12 | 教科習得促進具 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH064368Y2 (lt) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56160870U (lt) * | 1980-05-01 | 1981-11-30 | ||
| JPS579969U (lt) * | 1980-06-18 | 1982-01-19 |
-
1988
- 1988-05-12 JP JP1988062721U patent/JPH064368Y2/ja not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56160870U (lt) * | 1980-05-01 | 1981-11-30 | ||
| JPS579969U (lt) * | 1980-06-18 | 1982-01-19 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH064368Y2 (ja) | 1994-02-02 |