JPS5041958Y1 - - Google Patents
Info
- Publication number
- JPS5041958Y1 JPS5041958Y1 JP7748270U JP7748270U JPS5041958Y1 JP S5041958 Y1 JPS5041958 Y1 JP S5041958Y1 JP 7748270 U JP7748270 U JP 7748270U JP 7748270 U JP7748270 U JP 7748270U JP S5041958 Y1 JPS5041958 Y1 JP S5041958Y1
- 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 (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7748270U JPS5041958Y1 (cs) | 1970-08-05 | 1970-08-05 | |
| US00160586A US3771240A (en) | 1970-08-05 | 1971-07-08 | Self-teaching system |
| DE2139044A DE2139044C3 (de) | 1970-08-05 | 1971-08-04 | Elektrische Selbstlerneinrichtung |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7748270U JPS5041958Y1 (cs) | 1970-08-05 | 1970-08-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5041958Y1 true JPS5041958Y1 (cs) | 1975-11-28 |
Family
ID=33067190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7748270U Expired JPS5041958Y1 (cs) | 1970-08-05 | 1970-08-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5041958Y1 (cs) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS435081Y1 (cs) * | 1964-04-24 | 1968-03-04 |
-
1970
- 1970-08-05 JP JP7748270U patent/JPS5041958Y1/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS435081Y1 (cs) * | 1964-04-24 | 1968-03-04 |