GB739337A - Improvements in or relating to electric incandescent lamps of the kind comprising atleast one main filament and one screened dimming filament - Google Patents

Improvements in or relating to electric incandescent lamps of the kind comprising atleast one main filament and one screened dimming filament

Info

Publication number
GB739337A
GB739337A GB747/54A GB74754A GB739337A GB 739337 A GB739337 A GB 739337A GB 747/54 A GB747/54 A GB 747/54A GB 74754 A GB74754 A GB 74754A GB 739337 A GB739337 A GB 739337A
Authority
GB
United Kingdom
Prior art keywords
filament
dimming
electric incandescent
incandescent lamps
main
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
GB747/54A
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 GB739337A publication Critical patent/GB739337A/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)
GB747/54A 1953-01-14 1954-01-11 Improvements in or relating to electric incandescent lamps of the kind comprising atleast one main filament and one screened dimming filament Expired GB739337A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL318066X 1953-01-14

Publications (1)

Publication Number Publication Date
GB739337A true GB739337A (en) 1955-10-26

Family

ID=19783874

Family Applications (1)

Application Number Title Priority Date Filing Date
GB747/54A Expired GB739337A (en) 1953-01-14 1954-01-11 Improvements in or relating to electric incandescent lamps of the kind comprising atleast one main filament and one screened dimming filament

Country Status (6)

Country Link
BE (1) BE525697A (enrdf_load_stackoverflow)
CH (1) CH318066A (enrdf_load_stackoverflow)
DE (1) DE1142960B (enrdf_load_stackoverflow)
FR (1) FR1091341A (enrdf_load_stackoverflow)
GB (1) GB739337A (enrdf_load_stackoverflow)
NL (2) NL175286B (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3025424A (en) * 1958-06-16 1962-03-13 Gen Electric Electric lamp

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HU108744A (enrdf_load_stackoverflow) * 1932-03-09
DE713398C (de) * 1932-10-01 1941-11-06 Bosch Gmbh Robert Entsprechend der Wagenbelastung vom Fuehrersitz aus einstellbare Scheinwerferbeleuchtung mit einer Zweifadenlampe fuer Fahrzeuge
DE666004C (de) * 1936-07-19 1938-10-08 Patra Patent Treuhand Elektrische Scheinwerfergluehlampe
DE1605133U (de) * 1949-03-24 1950-04-20 Wilhelm Dipl Ing Roever Einrichtung an abblendkappen elektrischer scheinwerfer.
NL183883B (nl) 1952-12-29 Koopmans Koninkl Meelfabrieken Silo met gedeelde cellen.

Also Published As

Publication number Publication date
DE1142960B (de) 1963-01-31
CH318066A (de) 1956-12-15
NL81062C (enrdf_load_stackoverflow)
FR1091341A (fr) 1955-04-12
BE525697A (enrdf_load_stackoverflow)
NL175286B (nl)

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