FR571090A - - Google Patents
Info
- Publication number
- FR571090A FR571090A FR571090DA FR571090A FR 571090 A FR571090 A FR 571090A FR 571090D A FR571090D A FR 571090DA FR 571090 A FR571090 A FR 571090A
- 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
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR571090A true FR571090A (ja) | 1924-05-12 |
Family
ID=1539236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR571090D Expired FR571090A (ja) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR571090A (ja) |
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0
- FR FR571090D patent/FR571090A/fr not_active Expired