FR953815A - Cinema projector security shutter - Google Patents
Cinema projector security shutterInfo
- Publication number
- FR953815A FR953815A FR953815DA FR953815A FR 953815 A FR953815 A FR 953815A FR 953815D A FR953815D A FR 953815DA FR 953815 A FR953815 A FR 953815A
- Authority
- FR
- France
- Prior art keywords
- cinema projector
- security shutter
- projector security
- shutter
- cinema
- 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 |
---|---|---|---|
US953815XA | 1942-03-03 | 1942-03-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR953815A true FR953815A (en) | 1949-12-14 |
Family
ID=22251696
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR953815D Expired FR953815A (en) | 1942-03-03 | 1947-08-04 | Cinema projector security shutter |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR953815A (en) |
-
1947
- 1947-08-04 FR FR953815D patent/FR953815A/en not_active Expired
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