FR742046A - - Google Patents
Info
- Publication number
- FR742046A FR742046A FR742046DA FR742046A FR 742046 A FR742046 A FR 742046A FR 742046D A FR742046D A FR 742046DA FR 742046 A FR742046 A FR 742046A
- 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
- 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
- G02B23/02—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors
- G02B23/08—Periscopes
Landscapes
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR742046A true FR742046A (en) | 1933-02-24 |
Family
ID=1546504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR742046D Expired FR742046A (en) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR742046A (en) |
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0
- FR FR742046D patent/FR742046A/fr not_active Expired