FR853985A - Phosphorescent bulb device for electric lamps - Google Patents

Phosphorescent bulb device for electric lamps

Info

Publication number
FR853985A
FR853985A FR853985DA FR853985A FR 853985 A FR853985 A FR 853985A FR 853985D A FR853985D A FR 853985DA FR 853985 A FR853985 A FR 853985A
Authority
FR
France
Prior art keywords
phosphorescent
electric lamps
bulb device
bulb
lamps
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
Henri Gaston Georges Desmarest
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 FR853985A publication Critical patent/FR853985A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
    • H01K1/34—Double wall vessels
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
FR853985D 1938-11-30 1938-11-30 Phosphorescent bulb device for electric lamps Expired FR853985A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR853985T 1938-11-30

Publications (1)

Publication Number Publication Date
FR853985A true FR853985A (en) 1940-04-02

Family

ID=9327403

Family Applications (1)

Application Number Title Priority Date Filing Date
FR853985D Expired FR853985A (en) 1938-11-30 1938-11-30 Phosphorescent bulb device for electric lamps

Country Status (1)

Country Link
FR (1) FR853985A (en)

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