FR820528A - Multiple filament incandescent lamp - Google Patents

Multiple filament incandescent lamp

Info

Publication number
FR820528A
FR820528A FR820528DA FR820528A FR 820528 A FR820528 A FR 820528A FR 820528D A FR820528D A FR 820528DA FR 820528 A FR820528 A FR 820528A
Authority
FR
France
Prior art keywords
incandescent lamp
multiple filament
filament incandescent
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
Forrest Joseph Major
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 FR820528A publication Critical patent/FR820528A/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
FR820528D 1937-04-13 1937-04-12 Multiple filament incandescent lamp Expired FR820528A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1937M0137777 DE694630C (en) 1937-04-13 1937-04-13 Incandescent lamp with several optionally switchable glow threads

Publications (1)

Publication Number Publication Date
FR820528A true FR820528A (en) 1937-11-13

Family

ID=7333905

Family Applications (1)

Application Number Title Priority Date Filing Date
FR820528D Expired FR820528A (en) 1937-04-13 1937-04-12 Multiple filament incandescent lamp

Country Status (2)

Country Link
DE (1) DE694630C (en)
FR (1) FR820528A (en)

Also Published As

Publication number Publication date
DE694630C (en) 1940-08-05

Similar Documents

Publication Publication Date Title
FR46256E (en) Incandescent lamps
FR764293A (en) Incandescent lamp
FR842265A (en) Incandescent lamp improvements
FR846696A (en) Electric incandescent gas lamp
FR820528A (en) Multiple filament incandescent lamp
FR837699A (en) Incandescent electric lamp
FR825088A (en) Incandescent lamp improvements
FR785778A (en) Multiple filament incandescent lamp
FR673811A (en) Filament improvements for incandescent lamps
FR620358A (en) Multiple filament incandescent lamp
FR827499A (en) Incandescent lamp improvements
FR836840A (en) Incandescent electric lamp
FR839200A (en) Incandescent electric lamp
FR772763A (en) Incandescent lamps
FR805737A (en) Tubular incandescent lamp
FR840688A (en) Base for incandescent electric lamps
FR861094A (en) Multiple light incandescent lamp with combination switch
FR823094A (en) Luminescent bulb for incandescent electric lamps
FR839169A (en) Incandescent electric lamp
FR844304A (en) Incandescent electric lamp
FR748802A (en) Incandescent lamp socket
FR30126E (en) Multiple Filament Incandescent Lamp System
FR582826A (en) Multiple Filament Incandescent Lamp System
FR825142A (en) Electric discharge tubes or incandescent lamps
FR835248A (en) Miner's incandescent lamp