FR1017937A - Improvements made to a sighting device for cameras - Google Patents
Improvements made to a sighting device for camerasInfo
- Publication number
- FR1017937A FR1017937A FR1017937DA FR1017937A FR 1017937 A FR1017937 A FR 1017937A FR 1017937D A FR1017937D A FR 1017937DA FR 1017937 A FR1017937 A FR 1017937A
- Authority
- FR
- France
- Prior art keywords
- cameras
- improvements made
- sighting device
- sighting
- 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
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/02—Viewfinders
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1017937X | 1949-07-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1017937A true FR1017937A (en) | 1952-12-22 |
Family
ID=4552828
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1017937D Expired FR1017937A (en) | 1949-07-27 | 1950-05-15 | Improvements made to a sighting device for cameras |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR1017937A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2917968A (en) * | 1955-09-13 | 1959-12-22 | Canon Camera Co | Field changing means for viewfinder |
-
1950
- 1950-05-15 FR FR1017937D patent/FR1017937A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2917968A (en) * | 1955-09-13 | 1959-12-22 | Canon Camera Co | Field changing means for viewfinder |
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