FR835213A - Improvements to photographic shutters - Google Patents
Improvements to photographic shuttersInfo
- Publication number
- FR835213A FR835213A FR835213DA FR835213A FR 835213 A FR835213 A FR 835213A FR 835213D A FR835213D A FR 835213DA FR 835213 A FR835213 A FR 835213A
- Authority
- FR
- France
- Prior art keywords
- photographic shutters
- shutters
- photographic
- 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
- G03B9/00—Exposure-making shutters; Diaphragms
- G03B9/08—Shutters
- G03B9/10—Blade or disc rotating or pivoting about axis normal to its plane
- G03B9/18—More than two members
- G03B9/22—More than two members each moving in one direction to open and then in opposite direction to close, e.g. iris type
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US835213XA | 1936-10-30 | 1936-10-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR835213A true FR835213A (en) | 1938-12-15 |
Family
ID=22178866
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR835213D Expired FR835213A (en) | 1936-10-30 | 1937-10-30 | Improvements to photographic shutters |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR835213A (en) |
-
1937
- 1937-10-30 FR FR835213D patent/FR835213A/en not_active Expired
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