JPS5115568Y1 - - Google Patents
Info
- Publication number
- JPS5115568Y1 JPS5115568Y1 JP13613570U JP13613570U JPS5115568Y1 JP S5115568 Y1 JPS5115568 Y1 JP S5115568Y1 JP 13613570 U JP13613570 U JP 13613570U JP 13613570 U JP13613570 U JP 13613570U JP S5115568 Y1 JPS5115568 Y1 JP S5115568Y1
- Authority
- JP
- Japan
- 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
Landscapes
- Electrically Operated Instructional Devices (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13613570U JPS5115568Y1 (en) | 1970-12-29 | 1970-12-29 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13613570U JPS5115568Y1 (en) | 1970-12-29 | 1970-12-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5115568Y1 true JPS5115568Y1 (en) | 1976-04-23 |
Family
ID=33088789
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13613570U Expired JPS5115568Y1 (en) | 1970-12-29 | 1970-12-29 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5115568Y1 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3478441A (en) * | 1967-12-05 | 1969-11-18 | Zadig Patents The | Teaching aid for self instruction and testing |
-
1970
- 1970-12-29 JP JP13613570U patent/JPS5115568Y1/ja not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3478441A (en) * | 1967-12-05 | 1969-11-18 | Zadig Patents The | Teaching aid for self instruction and testing |