GB678635A - Improvements in or relating to electric incandescent lamps - Google Patents

Improvements in or relating to electric incandescent lamps

Info

Publication number
GB678635A
GB678635A GB8761/50A GB876150A GB678635A GB 678635 A GB678635 A GB 678635A GB 8761/50 A GB8761/50 A GB 8761/50A GB 876150 A GB876150 A GB 876150A GB 678635 A GB678635 A GB 678635A
Authority
GB
United Kingdom
Prior art keywords
filament
lamp
filaments
degrees
lamp cap
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
GB8761/50A
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 GB678635A publication Critical patent/GB678635A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K9/00—Lamps having two or more incandescent bodies separately heated
    • H01K9/08—Lamps having two or more incandescent bodies separately heated to provide selectively different light effects, e.g. for automobile headlamp

Landscapes

  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
GB8761/50A 1949-04-13 1950-04-06 Improvements in or relating to electric incandescent lamps Expired GB678635A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL282867X 1949-04-13

Publications (1)

Publication Number Publication Date
GB678635A true GB678635A (en) 1952-09-03

Family

ID=19782371

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8761/50A Expired GB678635A (en) 1949-04-13 1950-04-06 Improvements in or relating to electric incandescent lamps

Country Status (4)

Country Link
US (1) US2617062A (en, 2012)
CH (1) CH282867A (en, 2012)
GB (1) GB678635A (en, 2012)
NL (2) NL145946B (en, 2012)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733377A (en) * 1951-10-06 1956-01-31 Incandescent lamp comprising two
NL189456B (nl) * 1954-07-24 Maier Josef Hoekelement voor het bij elkaar houden van een reeks gestapelde plaatvormige voorwerpen.
US3025424A (en) * 1958-06-16 1962-03-13 Gen Electric Electric lamp
DE1489386C3 (de) * 1962-07-24 1974-04-11 Rolf 8000 Muenchen Mickley Glühlampe in Scheinwerferform
DE1197825B (de) * 1963-05-07 1965-08-05 Bosch Gmbh Robert Scheinwerfer fuer Kraftfahrzeuge
NL154058B (nl) * 1968-06-08 1977-07-15 Philips Nv Halogeengloeilamp voor voertuigverlichting.
US4536831A (en) * 1984-07-09 1985-08-20 Gte Products Corporation Replacement lamp with means for spacing
WO2012149243A1 (en) * 2011-04-29 2012-11-01 Siemens Healthcare Diagnostics Inc. High flux collimated illuminator and method of uniform field illumination

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB404578A (en) * 1933-08-17 1934-01-18 Wilhelm Honing Improvements in electric incandescent lamps
DE666004C (de) * 1936-07-19 1938-10-08 Patra Patent Treuhand Elektrische Scheinwerfergluehlampe
GB481910A (en) * 1936-09-23 1938-03-21 Aloysius Antonius Linders Improvements in or connected with electric incandescent lamps
FR822808A (fr) * 1937-06-09 1938-01-08 Vente Des App De Securite Sa P Dispositif de secours dans l'intérieur des lampes des véhicules automobiles

Also Published As

Publication number Publication date
NL72673C (en, 2012)
NL145946B (nl)
CH282867A (de) 1952-05-15
US2617062A (en) 1952-11-04

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