FR849076A - Double envelope incandescent electric lamp - Google Patents

Double envelope incandescent electric lamp

Info

Publication number
FR849076A
FR849076A FR849076DA FR849076A FR 849076 A FR849076 A FR 849076A FR 849076D A FR849076D A FR 849076DA FR 849076 A FR849076 A FR 849076A
Authority
FR
France
Prior art keywords
electric lamp
incandescent electric
double envelope
envelope
double
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.)
Claude Paz et Visseaux SA
Original Assignee
Societe Anonyme pour les Applications de lElectricite et des Gaz Rares Etablissement Claude Paz et Silva
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 Societe Anonyme pour les Applications de lElectricite et des Gaz Rares Etablissement Claude Paz et Silva filed Critical Societe Anonyme pour les Applications de lElectricite et des Gaz Rares Etablissement Claude Paz et Silva
Application granted granted Critical
Publication of FR849076A publication Critical patent/FR849076A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/58—Cooling arrangements
    • 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
FR849076D 1938-01-28 1939-01-18 Double envelope incandescent electric lamp Expired FR849076A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH512803X 1938-01-28

Publications (1)

Publication Number Publication Date
FR849076A true FR849076A (en) 1939-11-14

Family

ID=4517539

Family Applications (1)

Application Number Title Priority Date Filing Date
FR849076D Expired FR849076A (en) 1938-01-28 1939-01-18 Double envelope incandescent electric lamp

Country Status (6)

Country Link
US (1) US2188945A (en)
CH (1) CH204631A (en)
DE (1) DE741917C (en)
FR (1) FR849076A (en)
GB (1) GB512803A (en)
NL (1) NL53880C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2789267A1 (en) * 2010-02-08 2011-08-11 Ole K. Nilssen Evaporation cooled lamp

Also Published As

Publication number Publication date
CH204631A (en) 1939-05-15
DE741917C (en) 1943-11-19
GB512803A (en) 1939-09-26
NL53880C (en)
US2188945A (en) 1940-02-06

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