BE434243A - - Google Patents

Info

Publication number
BE434243A
BE434243A BE434243DA BE434243A BE 434243 A BE434243 A BE 434243A BE 434243D A BE434243D A BE 434243DA BE 434243 A BE434243 A BE 434243A
Authority
BE
Belgium
Application number
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.)
Publication of BE434243A publication Critical patent/BE434243A/xx

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
BE434243D 1938-05-10 BE434243A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE521331X 1938-05-10

Publications (1)

Publication Number Publication Date
BE434243A true BE434243A (en)

Family

ID=6551324

Family Applications (1)

Application Number Title Priority Date Filing Date
BE434243D BE434243A (en) 1938-05-10

Country Status (3)

Country Link
BE (1) BE434243A (en)
FR (1) FR854500A (en)
GB (1) GB521331A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4598225A (en) * 1983-02-25 1986-07-01 Gte Products Corporation Electric lamp with high outer-envelope to inner-envelope wall-thickness ratio
CA1305995C (en) * 1987-08-28 1992-08-04 William M. Keeffe Double-enveloped lamp having a shield surrounding a light-source capsule within a thick-walled outer envelope

Also Published As

Publication number Publication date
GB521331A (en) 1940-05-17
FR854500A (en) 1940-04-16

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