FR849742A - - Google Patents
Info
- Publication number
- FR849742A FR849742A FR849742DA FR849742A FR 849742 A FR849742 A FR 849742A FR 849742D A FR849742D A FR 849742DA FR 849742 A FR849742 A FR 849742A
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR849742A true FR849742A (ja) | 1939-11-30 |
Family
ID=1554660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR849742D Expired FR849742A (ja) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR849742A (ja) |
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0
- FR FR849742D patent/FR849742A/fr not_active Expired