FR447094A - Viseur perfectionné - Google Patents
Viseur perfectionnéInfo
- Publication number
- FR447094A FR447094A FR447094DA FR447094A FR 447094 A FR447094 A FR 447094A FR 447094D A FR447094D A FR 447094DA FR 447094 A FR447094 A FR 447094A
- Authority
- FR
- France
- Prior art keywords
- viewfinder
- advanced
- advanced viewfinder
- 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 |
---|---|---|---|
FR447094T | 1912-08-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR447094A true FR447094A (fr) | 1912-12-21 |
Family
ID=1487818
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR447094D Expired FR447094A (fr) | 1912-08-09 | 1912-08-09 | Viseur perfectionné |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR447094A (fr) |
-
1912
- 1912-08-09 FR FR447094D patent/FR447094A/fr not_active Expired
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