DE167723C - - Google Patents
Info
- Publication number
- DE167723C DE167723C DENDAT167723D DE167723DA DE167723C DE 167723 C DE167723 C DE 167723C DE NDAT167723 D DENDAT167723 D DE NDAT167723D DE 167723D A DE167723D A DE 167723DA DE 167723 C DE167723 C DE 167723C
- Authority
- DE
- Germany
- Prior art keywords
- display area
- mark
- reflector
- rotatable
- instrument
- 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.)
- Active
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)
- Telescopes (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE167723C true DE167723C (cs) |
Family
ID=433006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT167723D Active DE167723C (cs) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE167723C (cs) |
-
0
- DE DENDAT167723D patent/DE167723C/de active Active
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