FR657886A - Advanced electric lamp - Google Patents

Advanced electric lamp

Info

Publication number
FR657886A
FR657886A FR657886DA FR657886A FR 657886 A FR657886 A FR 657886A FR 657886D A FR657886D A FR 657886DA FR 657886 A FR657886 A FR 657886A
Authority
FR
France
Prior art keywords
electric lamp
advanced electric
advanced
lamp
electric
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
Maxime Leff
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 FR657886A publication Critical patent/FR657886A/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
FR657886D 1928-07-20 1928-07-20 Advanced electric lamp Expired FR657886A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR657886T 1928-07-20

Publications (1)

Publication Number Publication Date
FR657886A true FR657886A (en) 1929-05-28

Family

ID=9008722

Family Applications (1)

Application Number Title Priority Date Filing Date
FR657886D Expired FR657886A (en) 1928-07-20 1928-07-20 Advanced electric lamp

Country Status (1)

Country Link
FR (1) FR657886A (en)

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