FR827499A - Incandescent lamp improvements - Google Patents

Incandescent lamp improvements

Info

Publication number
FR827499A
FR827499A FR827499DA FR827499A FR 827499 A FR827499 A FR 827499A FR 827499D A FR827499D A FR 827499DA FR 827499 A FR827499 A FR 827499A
Authority
FR
France
Prior art keywords
incandescent lamp
incandescent
lamp
lamp improvements
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
Other languages
French (fr)
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.)
Compagnie des Lampes
Original Assignee
Compagnie des Lampes
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 Compagnie des Lampes filed Critical Compagnie des Lampes
Application granted granted Critical
Publication of FR827499A publication Critical patent/FR827499A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/50—Selection of substances for gas fillings; Specified pressure thereof
FR827499D 1936-10-05 1937-10-05 Incandescent lamp improvements Expired FR827499A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB26976/36A GB484566A (en) 1936-10-05 1936-10-05 Improvements in and relating to electric incandescent lamps

Publications (1)

Publication Number Publication Date
FR827499A true FR827499A (en) 1938-04-27

Family

ID=10252160

Family Applications (1)

Application Number Title Priority Date Filing Date
FR827499D Expired FR827499A (en) 1936-10-05 1937-10-05 Incandescent lamp improvements

Country Status (4)

Country Link
US (1) US2275674A (en)
BE (1) BE423936A (en)
FR (1) FR827499A (en)
GB (1) GB484566A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2894166A (en) * 1949-04-02 1959-07-07 Heraeus Gmbh W C Heat radiation devices
US2732513A (en) * 1952-01-31 1956-01-24 anderson
US5045748A (en) * 1985-11-15 1991-09-03 General Electric Company Tungsten-halogen incandescent and metal vapor discharge lamps and processes of making such
US4810932A (en) * 1985-11-15 1989-03-07 General Electric Company Tungsten-halogen incandescent and metal vapor discharge lamps and processes of making such

Also Published As

Publication number Publication date
US2275674A (en) 1942-03-10
GB484566A (en) 1938-05-05
BE423936A (en)

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