FR1029913A - Improvement in photographic shutters - Google Patents
Improvement in photographic shuttersInfo
- Publication number
- FR1029913A FR1029913A FR1029913DA FR1029913A FR 1029913 A FR1029913 A FR 1029913A FR 1029913D A FR1029913D A FR 1029913DA FR 1029913 A FR1029913 A FR 1029913A
- Authority
- FR
- France
- Prior art keywords
- improvement
- 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
- G03B9/20—More than two members each moving in a single direction first to open and then to reclose
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US1029913XA | 1949-12-20 | 1949-12-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1029913A true FR1029913A (en) | 1953-06-08 |
Family
ID=22292778
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1029913D Expired FR1029913A (en) | 1949-12-20 | 1950-12-19 | Improvement in photographic shutters |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR1029913A (en) |
-
1950
- 1950-12-19 FR FR1029913D patent/FR1029913A/en not_active Expired
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