JPS4849520A - - Google Patents
Info
- Publication number
- JPS4849520A JPS4849520A JP3763272A JP3763272A JPS4849520A JP S4849520 A JPS4849520 A JP S4849520A JP 3763272 A JP3763272 A JP 3763272A JP 3763272 A JP3763272 A JP 3763272A JP S4849520 A JPS4849520 A JP S4849520A
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B5/00—Electrically-operated educational appliances
- G09B5/06—Electrically-operated educational appliances with both visual and audible presentation of the material to be studied
- G09B5/067—Combinations of audio and projected visual presentation, e.g. film, slides
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Electrically Operated Instructional Devices (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
- Automatic Tape Cassette Changers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19712119386 DE2119386A1 (de) | 1971-04-21 | 1971-04-21 | Lehrgerät mit auswechselbaren Kassetten |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4849520A true JPS4849520A (ref) | 1973-07-12 |
Family
ID=5805392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3763272A Pending JPS4849520A (ref) | 1971-04-21 | 1972-04-14 |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS4849520A (ref) |
| DD (1) | DD99035A5 (ref) |
| DE (1) | DE2119386A1 (ref) |
-
1971
- 1971-04-21 DE DE19712119386 patent/DE2119386A1/de active Pending
-
1972
- 1972-04-14 JP JP3763272A patent/JPS4849520A/ja active Pending
- 1972-04-20 DD DD16244172A patent/DD99035A5/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE2119386A1 (de) | 1972-11-09 |
| DD99035A5 (ref) | 1973-07-12 |