FR547844A - - Google Patents
Info
- Publication number
- FR547844A FR547844A FR547844DA FR547844A FR 547844 A FR547844 A FR 547844A FR 547844D A FR547844D A FR 547844DA FR 547844 A FR547844 A FR 547844A
- 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
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/02—Optical objectives with means for varying the magnification by changing, adding, or subtracting a part of the objective, e.g. convertible objective
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR547844A true FR547844A (ru) | 1922-12-26 |
Family
ID=1538075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR547844D Expired FR547844A (ru) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR547844A (ru) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6400503B1 (en) * | 2001-06-08 | 2002-06-04 | Philip A. Mickelson | Portable variable power zoom periscope |
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0
- FR FR547844D patent/FR547844A/fr not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6400503B1 (en) * | 2001-06-08 | 2002-06-04 | Philip A. Mickelson | Portable variable power zoom periscope |