FR767908A - Mirror glass ball, bulb or tube for incandescent electric lamps - Google Patents

Mirror glass ball, bulb or tube for incandescent electric lamps

Info

Publication number
FR767908A
FR767908A FR767908DA FR767908A FR 767908 A FR767908 A FR 767908A FR 767908D A FR767908D A FR 767908DA FR 767908 A FR767908 A FR 767908A
Authority
FR
France
Prior art keywords
bulb
tube
glass ball
mirror glass
electric 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
Joseph Cesar Henri Edmond Cau
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 FR767908A publication Critical patent/FR767908A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
    • H01K1/32—Envelopes; Vessels provided with coatings on the walls; Vessels or coatings thereon characterised by the material thereof
    • H01K1/325—Reflecting coating
FR767908D 1933-02-02 1934-01-31 Mirror glass ball, bulb or tube for incandescent electric lamps Expired FR767908A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE767908X 1933-02-02

Publications (1)

Publication Number Publication Date
FR767908A true FR767908A (en) 1934-07-27

Family

ID=3880096

Family Applications (1)

Application Number Title Priority Date Filing Date
FR767908D Expired FR767908A (en) 1933-02-02 1934-01-31 Mirror glass ball, bulb or tube for incandescent electric lamps

Country Status (1)

Country Link
FR (1) FR767908A (en)

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