FR636777A - - Google Patents
Info
- Publication number
- FR636777A FR636777A FR636777DA FR636777A FR 636777 A FR636777 A FR 636777A FR 636777D A FR636777D A FR 636777DA FR 636777 A FR636777 A FR 636777A
- 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
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR636777A true FR636777A (en) | 1928-04-16 |
Family
ID=1542593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR636777D Expired FR636777A (en) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR636777A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1076811B (en) * | 1955-10-10 | 1960-03-03 | Gerwald Kersting | Spotlights with several lamps arranged one above the other |
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0
- FR FR636777D patent/FR636777A/fr not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1076811B (en) * | 1955-10-10 | 1960-03-03 | Gerwald Kersting | Spotlights with several lamps arranged one above the other |