FR741150A - - Google Patents
Info
- Publication number
- FR741150A FR741150A FR741150DA FR741150A FR 741150 A FR741150 A FR 741150A FR 741150D A FR741150D A FR 741150DA FR 741150 A FR741150 A FR 741150A
- 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
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/10—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses
Landscapes
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR741150A true FR741150A (cs) | 1933-02-04 |
Family
ID=1545725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR741150D Expired FR741150A (cs) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR741150A (cs) |
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0
- FR FR741150D patent/FR741150A/fr not_active Expired