FR948702A - Filtre pour ampoules électriques - Google Patents

Filtre pour ampoules électriques

Info

Publication number
FR948702A
FR948702A FR948702DA FR948702A FR 948702 A FR948702 A FR 948702A FR 948702D A FR948702D A FR 948702DA FR 948702 A FR948702 A FR 948702A
Authority
FR
France
Prior art keywords
filter
light bulbs
bulbs
light
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
English (en)
Inventor
Pierre Marijon
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 FR948702A publication Critical patent/FR948702A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/26—Screens; Filters
    • 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
FR948702D 1947-07-01 1947-07-01 Filtre pour ampoules électriques Expired FR948702A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR948702T 1947-07-01

Publications (1)

Publication Number Publication Date
FR948702A true FR948702A (fr) 1949-08-09

Family

ID=9474142

Family Applications (1)

Application Number Title Priority Date Filing Date
FR948702D Expired FR948702A (fr) 1947-07-01 1947-07-01 Filtre pour ampoules électriques

Country Status (1)

Country Link
FR (1) FR948702A (fr)

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