FR825151A - Improvements to cameras - Google Patents
Improvements to camerasInfo
- Publication number
- FR825151A FR825151A FR825151DA FR825151A FR 825151 A FR825151 A FR 825151A FR 825151D A FR825151D A FR 825151DA FR 825151 A FR825151 A FR 825151A
- Authority
- FR
- France
- Prior art keywords
- cameras
- 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
- G03B13/18—Focusing aids
- G03B13/20—Rangefinders coupled with focusing arrangements, e.g. adjustment of rangefinder automatically focusing camera
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE825151X | 1936-08-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR825151A true FR825151A (en) | 1938-02-24 |
Family
ID=6747461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR825151D Expired FR825151A (en) | 1936-08-04 | 1937-08-03 | Improvements to cameras |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR825151A (en) |
-
1937
- 1937-08-03 FR FR825151D patent/FR825151A/en not_active Expired
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