FR756489A - Electric safety mechanism for cinematographs - Google Patents
Electric safety mechanism for cinematographsInfo
- Publication number
- FR756489A FR756489A FR756489DA FR756489A FR 756489 A FR756489 A FR 756489A FR 756489D A FR756489D A FR 756489DA FR 756489 A FR756489 A FR 756489A
- Authority
- FR
- France
- Prior art keywords
- cinematographs
- safety mechanism
- electric safety
- electric
- safety
- 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.)
- Expired
Links
Classifications
-
- 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
- G03B21/18—Fire preventing or extinguishing
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR756489T | 1933-06-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR756489A true FR756489A (en) | 1933-12-11 |
Family
ID=9165613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR756489D Expired FR756489A (en) | 1933-06-06 | 1933-06-06 | Electric safety mechanism for cinematographs |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR756489A (en) |
-
1933
- 1933-06-06 FR FR756489D patent/FR756489A/en not_active Expired
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