FR892707A - Dispositif de protection des projecteurs électriques - Google Patents
Dispositif de protection des projecteurs électriquesInfo
- Publication number
- FR892707A FR892707A FR892707DA FR892707A FR 892707 A FR892707 A FR 892707A FR 892707D A FR892707D A FR 892707DA FR 892707 A FR892707 A FR 892707A
- Authority
- FR
- France
- Prior art keywords
- protection device
- headlamp protection
- electric
- electric headlamp
- protection
- 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
- G03B21/32—Details specially adapted for motion-picture projection
- G03B21/50—Control devices operated by the film strip during the run
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR892707T | 1943-03-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR892707A true FR892707A (fr) | 1944-05-17 |
Family
ID=9389733
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR892707D Expired FR892707A (fr) | 1943-03-19 | 1943-03-19 | Dispositif de protection des projecteurs électriques |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR892707A (fr) |
-
1943
- 1943-03-19 FR FR892707D patent/FR892707A/fr not_active Expired
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