FR780954A - Improvements to electric lamps - Google Patents

Improvements to electric lamps

Info

Publication number
FR780954A
FR780954A FR780954DA FR780954A FR 780954 A FR780954 A FR 780954A FR 780954D A FR780954D A FR 780954DA FR 780954 A FR780954 A FR 780954A
Authority
FR
France
Prior art keywords
electric lamps
lamps
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)
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.)
Compagnie des Lampes
Original Assignee
Compagnie des Lampes
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 Compagnie des Lampes filed Critical Compagnie des Lampes
Application granted granted Critical
Publication of FR780954A publication Critical patent/FR780954A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00Gas-discharge or vapour-discharge lamps
    • H01J61/82Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
    • H01J61/822High-pressure mercury lamps
FR780954D 1933-11-08 1934-11-08 Improvements to electric lamps Expired FR780954A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB780954X 1933-11-08

Publications (1)

Publication Number Publication Date
FR780954A true FR780954A (en) 1935-05-07

Family

ID=10497746

Family Applications (1)

Application Number Title Priority Date Filing Date
FR780954D Expired FR780954A (en) 1933-11-08 1934-11-08 Improvements to electric lamps

Country Status (1)

Country Link
FR (1) FR780954A (en)

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