FR547059A - Two-filament incandescent lamp - Google Patents

Two-filament incandescent lamp

Info

Publication number
FR547059A
FR547059A FR547059DA FR547059A FR 547059 A FR547059 A FR 547059A FR 547059D A FR547059D A FR 547059DA FR 547059 A FR547059 A FR 547059A
Authority
FR
France
Prior art keywords
incandescent lamp
filament incandescent
filament
lamp
incandescent
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
Louis Renault
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 FR547059A publication Critical patent/FR547059A/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
FR547059D 1922-02-10 1922-02-10 Two-filament incandescent lamp Expired FR547059A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR547059T 1922-02-10

Publications (1)

Publication Number Publication Date
FR547059A true FR547059A (en) 1922-11-30

Family

ID=8933951

Family Applications (1)

Application Number Title Priority Date Filing Date
FR547059D Expired FR547059A (en) 1922-02-10 1922-02-10 Two-filament incandescent lamp

Country Status (1)

Country Link
FR (1) FR547059A (en)

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