FR742797A - - Google Patents
Info
- Publication number
- FR742797A FR742797A FR742797DA FR742797A FR 742797 A FR742797 A FR 742797A FR 742797D A FR742797D A FR 742797DA FR 742797 A FR742797 A FR 742797A
- Authority
- FR
- France
- 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)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR742797A true FR742797A (de) | 1933-03-15 |
Family
ID=1547150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR742797D Expired FR742797A (de) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR742797A (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2467456A (en) * | 1945-03-17 | 1949-04-19 | Pignons Sa | Safety control device for camera telemeters |
| US2689509A (en) * | 1948-10-05 | 1954-09-21 | Bolsey Jacques | Range finder for cameras |
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0
- FR FR742797D patent/FR742797A/fr not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2467456A (en) * | 1945-03-17 | 1949-04-19 | Pignons Sa | Safety control device for camera telemeters |
| US2689509A (en) * | 1948-10-05 | 1954-09-21 | Bolsey Jacques | Range finder for cameras |