FR35706E - Double envelope electric lamp - Google Patents

Double envelope electric lamp

Info

Publication number
FR35706E
FR35706E FR35706DA FR35706E FR 35706 E FR35706 E FR 35706E FR 35706D A FR35706D A FR 35706DA FR 35706 E FR35706 E FR 35706E
Authority
FR
France
Prior art keywords
electric lamp
double envelope
envelope electric
double
lamp
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
Marie-Patrice-Antoin Du Mesnil
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 FR35706E publication Critical patent/FR35706E/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
FR35706D 1928-04-07 1928-04-07 Double envelope electric lamp Expired FR35706E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR35706T 1928-04-07

Publications (1)

Publication Number Publication Date
FR35706E true FR35706E (en) 1930-03-27

Family

ID=8672552

Family Applications (1)

Application Number Title Priority Date Filing Date
FR35706D Expired FR35706E (en) 1928-04-07 1928-04-07 Double envelope electric lamp

Country Status (1)

Country Link
FR (1) FR35706E (en)

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