CH561431A5 - - Google Patents
Info
- Publication number
- CH561431A5 CH561431A5 CH321473A CH321473A CH561431A5 CH 561431 A5 CH561431 A5 CH 561431A5 CH 321473 A CH321473 A CH 321473A CH 321473 A CH321473 A CH 321473A CH 561431 A5 CH561431 A5 CH 561431A5
- Authority
- CH
- Switzerland
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
- G09B5/02—Electrically-operated educational appliances with visual presentation of the material to be studied, e.g. using film strip
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B19/00—Cameras
- G03B19/18—Motion-picture cameras
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/32—Details specially adapted for motion-picture projection
- G03B21/50—Control devices operated by the film strip during the run
- G03B21/52—Control devices operated by the film strip during the run by prepared film
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Projection Apparatus (AREA)
- Overhead Projectors And Projection Screens (AREA)
- Electrically Operated Instructional Devices (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19727208770 DE7208770U (de) | 1972-03-08 | 1972-03-08 | Vorrichtung zur bildhoeheneinstellung fuer einen filmprojektor |
| DE19732304110 DE2304110A1 (de) | 1973-01-27 | 1973-01-27 | Filmprojektor, insbesondere fuer lehrgeraete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH561431A5 true CH561431A5 (es) | 1975-04-30 |
Family
ID=25764598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH321473A CH561431A5 (es) | 1972-03-08 | 1973-03-05 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3829206A (es) |
| JP (1) | JPS48102618A (es) |
| CH (1) | CH561431A5 (es) |
| FR (1) | FR2175496A5 (es) |
| GB (1) | GB1417516A (es) |
| IT (1) | IT979755B (es) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0697614A2 (en) * | 1991-03-22 | 1996-02-21 | Nikon Corporation | Optical apparatus for correcting image deviation |
| CN113838318A (zh) * | 2020-06-23 | 2021-12-24 | 福建润邦智能科技有限公司 | 一种高度可调式便于安装固定的教学智能化设备 |
-
1973
- 1973-03-05 CH CH321473A patent/CH561431A5/xx not_active IP Right Cessation
- 1973-03-05 JP JP48025231A patent/JPS48102618A/ja active Pending
- 1973-03-07 GB GB1105873A patent/GB1417516A/en not_active Expired
- 1973-03-07 US US00338950A patent/US3829206A/en not_active Expired - Lifetime
- 1973-03-07 IT IT7348656A patent/IT979755B/it active
- 1973-03-08 FR FR7308345A patent/FR2175496A5/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS48102618A (es) | 1973-12-24 |
| GB1417516A (en) | 1975-12-10 |
| US3829206A (en) | 1974-08-13 |
| IT979755B (it) | 1974-09-30 |
| FR2175496A5 (es) | 1973-10-19 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased |