FR765847A - Improvements to light bulbs - Google Patents
Improvements to light bulbsInfo
- Publication number
- FR765847A FR765847A FR765847DA FR765847A FR 765847 A FR765847 A FR 765847A FR 765847D A FR765847D A FR 765847DA FR 765847 A FR765847 A FR 765847A
- Authority
- FR
- France
- Prior art keywords
- light bulbs
- bulbs
- light
- Prior art date
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/28—Envelopes; Vessels
- H01K1/34—Double wall vessels
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR765847T | 1933-12-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR765847A true FR765847A (en) | 1934-06-16 |
Family
ID=9182969
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR765847D Expired FR765847A (en) | 1933-12-20 | 1933-12-20 | Improvements to light bulbs |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR765847A (en) |
-
1933
- 1933-12-20 FR FR765847D patent/FR765847A/en not_active Expired
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