FR676367A - Three-filament electric lamp - Google Patents
Three-filament electric lampInfo
- Publication number
- FR676367A FR676367A FR676367DA FR676367A FR 676367 A FR676367 A FR 676367A FR 676367D A FR676367D A FR 676367DA FR 676367 A FR676367 A FR 676367A
- Authority
- FR
- France
- Prior art keywords
- electric lamp
- filament electric
- filament
- lamp
- electric
- 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
- H01K9/00—Lamps having two or more incandescent bodies separately heated
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US303443A US1859661A (en) | 1928-09-01 | 1928-09-01 | Three filament bulb |
Publications (1)
Publication Number | Publication Date |
---|---|
FR676367A true FR676367A (en) | 1930-02-21 |
Family
ID=23172104
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR676367D Expired FR676367A (en) | 1928-09-01 | 1929-06-07 | Three-filament electric lamp |
Country Status (4)
Country | Link |
---|---|
US (1) | US1859661A (en) |
DE (1) | DE543588C (en) |
FR (1) | FR676367A (en) |
GB (1) | GB318228A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2162625B (en) * | 1984-07-31 | 1988-01-27 | Stanley Electric Co Ltd | Headlamp for vehicle |
US9642227B2 (en) | 2010-06-18 | 2017-05-02 | Thomas & Betts International Llc | Extending service life of lighting fixtures |
-
1928
- 1928-09-01 US US303443A patent/US1859661A/en not_active Expired - Lifetime
-
1929
- 1929-05-22 DE DEG76480D patent/DE543588C/en not_active Expired
- 1929-05-27 GB GB16237/29A patent/GB318228A/en not_active Expired
- 1929-06-07 FR FR676367D patent/FR676367A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE543588C (en) | 1932-02-06 |
US1859661A (en) | 1932-05-24 |
GB318228A (en) | 1930-08-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR687021A (en) | Incandescent electric lamp | |
FR706312A (en) | Electric gas discharge lamp | |
FR676367A (en) | Three-filament electric lamp | |
FR648062A (en) | Incandescent electric lamp | |
FR697876A (en) | Electric lamp | |
FR676446A (en) | Incandescent electric lamp | |
FR672232A (en) | Incandescent electric lamp | |
FR648470A (en) | Incandescent electric lamp | |
FR679746A (en) | Incandescent electric lamp | |
FR674782A (en) | Incandescent electric lamp | |
FR674939A (en) | Incandescent electric lamp | |
FR34306E (en) | Incandescent electric lamp | |
FR606854A (en) | Electric lamp with subdivided filaments | |
FR708250A (en) | Electric gas lamp | |
FR676337A (en) | Incandescent electric lamps | |
FR617057A (en) | Electric lamp with electromagnet | |
FR688687A (en) | Electric hand lamp | |
FR674089A (en) | Electric hand lamp | |
FR665295A (en) | Double envelope electric lamp | |
FR696318A (en) | Incandescent electric lamp | |
FR670821A (en) | Multiple filament electric lamp | |
FR657886A (en) | Advanced electric lamp | |
FR619233A (en) | Electric lamp with two combined filaments | |
FR739783A (en) | Electric discharge lamp | |
FR656959A (en) | Lampshade |