GB510590A - Improvements relating to electric lamps - Google Patents
Improvements relating to electric lampsInfo
- Publication number
- GB510590A GB510590A GB11727/39A GB1172739A GB510590A GB 510590 A GB510590 A GB 510590A GB 11727/39 A GB11727/39 A GB 11727/39A GB 1172739 A GB1172739 A GB 1172739A GB 510590 A GB510590 A GB 510590A
- Authority
- GB
- United Kingdom
- Prior art keywords
- improvements relating
- electric lamps
- lamps
- electric
- relating
- 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
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/96—Lamps with light-emitting discharge path and separately-heated incandescent body within a common envelope, e.g. for simulating daylight
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH510539X | 1937-02-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB510590A true GB510590A (en) | 1939-08-02 |
Family
ID=4517412
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB11727/39A Expired GB510590A (en) | 1937-02-02 | 1938-02-02 | Improvements relating to electric lamps |
GB3277/38A Expired GB510539A (en) | 1937-02-02 | 1938-02-02 | Improvements in electric lamps |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3277/38A Expired GB510539A (en) | 1937-02-02 | 1938-02-02 | Improvements in electric lamps |
Country Status (5)
Country | Link |
---|---|
US (1) | US2329455A (en) |
BE (1) | BE425995A (en) |
DE (1) | DE910934C (en) |
FR (1) | FR832724A (en) |
GB (2) | GB510590A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2619615A (en) * | 1939-05-11 | 1952-11-25 | Gen Electric | Circuit for operating electric discharge lamps |
US4170744A (en) * | 1978-03-10 | 1979-10-09 | General Electric Company | Combination discharge-incandescent lamp with thermal switch control |
CH642775A5 (en) * | 1982-05-13 | 1984-04-30 | Johann Buser | Entladungsgefaess with hochstromdurchfuehrungen. |
WO2002029851A1 (en) * | 2000-10-04 | 2002-04-11 | Theodore Mcbain | Independent dual-function light bulb |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB190314163A (en) * | 1903-06-25 | 1904-04-07 | Frederick William Le Tall | Improvements in Apparatus for Electric Lighting. |
US985486A (en) * | 1907-07-16 | 1911-02-28 | Alfred A Wohlauer | Electric-lighting apparatus. |
DE330821C (en) * | 1919-09-27 | 1920-12-23 | Paul Bachmann | A lighting and irradiation apparatus made up of mercury vapor, metal and carbon filament lamps |
NL36696C (en) * | 1931-10-03 | |||
AT135460B (en) * | 1931-10-03 | 1933-11-25 | Philips Nv | Electric discharge tube with metal vapor filling. |
US2065988A (en) * | 1932-01-25 | 1936-12-29 | Sperti Lamp Corp | Lamp |
US1976149A (en) * | 1932-01-25 | 1934-10-09 | Sperti Lamp Corp | Lamp |
FR751345A (en) * | 1932-03-01 | 1933-08-31 | Lampes Sa | Lamp refinements |
US1990170A (en) * | 1932-12-07 | 1935-02-05 | Gen Electric | Gaseous electric discharge lamp device |
US2020737A (en) * | 1932-12-24 | 1935-11-12 | Gen Electric | Gaseous electric discharge arc lamp |
-
0
- BE BE425995D patent/BE425995A/xx unknown
-
1938
- 1938-01-27 FR FR832724D patent/FR832724A/en not_active Expired
- 1938-01-30 DE DEB1157D patent/DE910934C/en not_active Expired
- 1938-02-01 US US188126A patent/US2329455A/en not_active Expired - Lifetime
- 1938-02-02 GB GB11727/39A patent/GB510590A/en not_active Expired
- 1938-02-02 GB GB3277/38A patent/GB510539A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB510539A (en) | 1939-08-02 |
BE425995A (en) | |
FR832724A (en) | 1938-10-03 |
US2329455A (en) | 1943-09-14 |
DE910934C (en) | 1954-05-06 |
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