FR817083A - Magnification change device - Google Patents
Magnification change deviceInfo
- Publication number
- FR817083A FR817083A FR817083DA FR817083A FR 817083 A FR817083 A FR 817083A FR 817083D A FR817083D A FR 817083DA FR 817083 A FR817083 A FR 817083A
- Authority
- FR
- France
- Prior art keywords
- change device
- magnification change
- magnification
- change
- 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
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 |
---|---|---|---|
FR817083T | 1936-04-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR817083A true FR817083A (en) | 1937-08-25 |
Family
ID=9268133
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR817083D Expired FR817083A (en) | 1936-04-29 | 1936-04-29 | Magnification change device |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR817083A (en) |
-
1936
- 1936-04-29 FR FR817083D patent/FR817083A/en not_active Expired
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