FR899432A - Base for two-filament incandescent lamps and method for its manufacture - Google Patents

Base for two-filament incandescent lamps and method for its manufacture

Info

Publication number
FR899432A
FR899432A FR899432DA FR899432A FR 899432 A FR899432 A FR 899432A FR 899432D A FR899432D A FR 899432DA FR 899432 A FR899432 A FR 899432A
Authority
FR
France
Prior art keywords
manufacture
base
incandescent lamps
filament incandescent
filament
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)
Inventor
Erich Hofmann
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 filed Critical
Application granted granted Critical
Publication of FR899432A publication Critical patent/FR899432A/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
    • H01K9/02—Lamps having two or more incandescent bodies separately heated to provide substitution in the event of failure of one of the bodies
    • H01K9/04—Lamps having two or more incandescent bodies separately heated to provide substitution in the event of failure of one of the bodies with built-in manually operated switch
FR899432D 1942-10-05 1943-11-05 Base for two-filament incandescent lamps and method for its manufacture Expired FR899432A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE899432X 1942-10-05

Publications (1)

Publication Number Publication Date
FR899432A true FR899432A (en) 1945-05-30

Family

ID=6849519

Family Applications (1)

Application Number Title Priority Date Filing Date
FR899432D Expired FR899432A (en) 1942-10-05 1943-11-05 Base for two-filament incandescent lamps and method for its manufacture

Country Status (3)

Country Link
BE (1) BE452858A (en)
FR (1) FR899432A (en)
NL (1) NL60212C (en)

Also Published As

Publication number Publication date
BE452858A (en)
NL60212C (en)

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