GB903911A - Improvements in or relating to electric incandescent lamps, more particularly projection lamps - Google Patents

Improvements in or relating to electric incandescent lamps, more particularly projection lamps

Info

Publication number
GB903911A
GB903911A GB3622158A GB3622158A GB903911A GB 903911 A GB903911 A GB 903911A GB 3622158 A GB3622158 A GB 3622158A GB 3622158 A GB3622158 A GB 3622158A GB 903911 A GB903911 A GB 903911A
Authority
GB
United Kingdom
Prior art keywords
filament
lamps
relating
pinch
punch
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
GB3622158A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries 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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB903911A publication Critical patent/GB903911A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/18—Mountings or supports for the incandescent body
    • H01K1/22—Lamp stems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/38—Seals for leading-in conductors

Landscapes

  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Connecting Device With Holders (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
GB3622158A 1957-11-14 1958-11-11 Improvements in or relating to electric incandescent lamps, more particularly projection lamps Expired GB903911A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL222463 1957-11-14

Publications (1)

Publication Number Publication Date
GB903911A true GB903911A (en) 1962-08-22

Family

ID=19751033

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3622158A Expired GB903911A (en) 1957-11-14 1958-11-11 Improvements in or relating to electric incandescent lamps, more particularly projection lamps

Country Status (4)

Country Link
DE (2) DE1854864U (cg-RX-API-DMAC7.html)
FR (1) FR1207373A (cg-RX-API-DMAC7.html)
GB (1) GB903911A (cg-RX-API-DMAC7.html)
NL (1) NL97146C (cg-RX-API-DMAC7.html)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1715580A (en) * 1929-06-04 Turner
CH68247A (de) * 1913-11-28 1915-02-16 August Krueger Ernst Faden-, bezw. Drahtanordnung für Metallfaden-, bezw. Metalldrahtlampen
GB329446A (en) * 1929-03-26 1930-05-22 Gen Electric Co Ltd Improvements in gas-filled electric incandescent lamps
US2140977A (en) * 1937-07-16 1938-12-20 Westinghouse Electric & Mfg Co Incandescent lamp
US2218346A (en) * 1938-07-08 1940-10-15 Spaeth Charles Gas-filled incandescent electric lamp
DE725163C (de) * 1940-01-11 1942-09-16 Felix Ritter Kalbacher V Tuerk Elektrische Gluehlampe mit beim Betrieb verdampfender Quecksilbereinlage

Also Published As

Publication number Publication date
NL97146C (cg-RX-API-DMAC7.html)
DE1117746B (de) 1961-11-23
DE1854864U (de) 1962-07-12
FR1207373A (fr) 1960-02-16

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