FR387420A - Improvements to electrical installations with metal filament lamps - Google Patents

Improvements to electrical installations with metal filament lamps

Info

Publication number
FR387420A
FR387420A FR387420DA FR387420A FR 387420 A FR387420 A FR 387420A FR 387420D A FR387420D A FR 387420DA FR 387420 A FR387420 A FR 387420A
Authority
FR
France
Prior art keywords
metal filament
electrical installations
filament lamps
lamps
installations
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
William Dierman
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR387420A publication Critical patent/FR387420A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B39/00—Circuit arrangements or apparatus for operating incandescent light sources
    • H05B39/10—Circuits providing for substitution of the light source in case of its failure
FR387420D 1907-02-22 1908-02-21 Improvements to electrical installations with metal filament lamps Expired FR387420A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE387420X 1907-02-22

Publications (1)

Publication Number Publication Date
FR387420A true FR387420A (en) 1908-07-09

Family

ID=1433159

Family Applications (1)

Application Number Title Priority Date Filing Date
FR387420D Expired FR387420A (en) 1907-02-22 1908-02-21 Improvements to electrical installations with metal filament lamps

Country Status (1)

Country Link
FR (1) FR387420A (en)

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