GB657220A - Improvements in or relating to electric incandescent lamps - Google Patents

Improvements in or relating to electric incandescent lamps

Info

Publication number
GB657220A
GB657220A GB4381/49A GB438149A GB657220A GB 657220 A GB657220 A GB 657220A GB 4381/49 A GB4381/49 A GB 4381/49A GB 438149 A GB438149 A GB 438149A GB 657220 A GB657220 A GB 657220A
Authority
GB
United Kingdom
Prior art keywords
wire
stem
bent
feb
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
Application number
GB4381/49A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB657220A publication Critical patent/GB657220A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/52—Means for obtaining or maintaining the desired pressure within the vessel
    • H01K1/54—Means for absorbing or absorbing gas, or for preventing or removing efflorescence, e.g. by gettering
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/26—Screens; Filters

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
GB4381/49A 1948-02-21 1949-02-17 Improvements in or relating to electric incandescent lamps Expired GB657220A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US9984A US2494916A (en) 1948-02-21 1948-02-21 Electric lamp with blackening collector

Publications (1)

Publication Number Publication Date
GB657220A true GB657220A (en) 1951-09-12

Family

ID=21740847

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4381/49A Expired GB657220A (en) 1948-02-21 1949-02-17 Improvements in or relating to electric incandescent lamps

Country Status (4)

Country Link
US (1) US2494916A (pl)
BE (1) BE487465A (pl)
GB (1) GB657220A (pl)
NL (2) NL144929B (pl)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2812465A (en) * 1954-05-10 1957-11-05 Kenneth J Germeshausen Gaseous-discharge device
US2931933A (en) * 1958-03-28 1960-04-05 Bell & Howell Co Incandescent lamp
US3209192A (en) * 1960-12-29 1965-09-28 Westinghouse Electric Corp Decorative electric lamp with specular coating
US3348094A (en) * 1965-12-28 1967-10-17 Sylvania Electric Prod Projection lamp including a blackening control device
NL6607798A (pl) * 1966-06-04 1967-12-05
US4280076A (en) * 1978-10-18 1981-07-21 Duro-Test Corporation Incandescent lamp with structure for collecting evaporated filament material
JP2004509437A (ja) * 2000-09-14 2004-03-25 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ 蛍光ランプ及びその製造方法
CN114352955A (zh) * 2021-12-22 2022-04-15 杭州天都照明电器有限公司 用于led灯丝灯的芯柱、led灯丝灯、led灯和灯具

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2183952A (en) * 1938-05-13 1939-12-19 Westinghouse Electric & Mfg Co Fuse lead construction for electric lamps
US2208987A (en) * 1938-05-24 1940-07-23 Gen Electric Electric incandescent lamp
US2379058A (en) * 1943-04-06 1945-06-26 Westinghouse Electric Corp Lamp with means to improve lumen maintenance

Also Published As

Publication number Publication date
NL80117C (pl)
NL144929B (nl)
BE487465A (pl)
US2494916A (en) 1950-01-17

Similar Documents

Publication Publication Date Title
GB657220A (en) Improvements in or relating to electric incandescent lamps
GB639604A (en) Improvements in and relating to electric incandescent lamps
US2717306A (en) Candle lamps
GB1037366A (en) Photographic lighting device
US2455829A (en) Electric lamp
US2596006A (en) Means for attaching electric lamp sockets to tubular lamp bases
GB797441A (en) Improvements in and relating to electric lamps
GB489255A (en) Improvements in or relating to electric lamps
GB224894A (en) Improvements in and relating to incandescent lamps and similar devices
US1939260A (en) Lighting fixture
GB354037A (en) Electric candle lamps
GB604785A (en) Improvements in or relating to the exhaust tube constructions in the envelopes of electric discharge tubes
JPS6310585Y2 (pl)
GB271029A (en) Improvements in or relating to electric incandescent lamps
GB610984A (en) Improvements relating to terminal caps for electric lamps and the like
GB673487A (en) Improvements in and relating to electric incandescent lamps
GB397311A (en) Improvements in or relating to electric incandescent lamps
GB729511A (en) Improvements in and relating to table lamps
GB450647A (en) Improvements in and relating to bulb holders for electric torches, flash-lamps and like battery lamps
GB379090A (en) Improvements in or relating to thermionic valve holders
JPS5665435A (en) Manufacture of tubelar bulb
GB686949A (en) Improvements in and relating to electric lamp sockets
GB686885A (en) Improvements in and relating to electric lamp sockets
GB305581A (en) Contact-preventing devices for electric incandescent lamps
GB497173A (en) Improvements in or relating to incandescent lamp holders