FR728764A - Viseur - Google Patents
ViseurInfo
- Publication number
- FR728764A FR728764A FR728764DA FR728764A FR 728764 A FR728764 A FR 728764A FR 728764D A FR728764D A FR 728764DA FR 728764 A FR728764 A FR 728764A
- Authority
- FR
- France
- Prior art keywords
- 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
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/14—Viewfinders
Landscapes
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE728764X | 1930-12-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR728764A true FR728764A (fr) | 1932-07-11 |
Family
ID=6635802
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR728764D Expired FR728764A (fr) | 1930-12-24 | 1931-12-23 | Viseur |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR728764A (fr) |
-
1931
- 1931-12-23 FR FR728764D patent/FR728764A/fr not_active Expired
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