FR695093A - Incandescent electric lamps - Google Patents

Incandescent electric lamps

Info

Publication number
FR695093A
FR695093A FR695093DA FR695093A FR 695093 A FR695093 A FR 695093A FR 695093D A FR695093D A FR 695093DA FR 695093 A FR695093 A FR 695093A
Authority
FR
France
Prior art keywords
electric lamps
incandescent electric
incandescent
lamps
electric
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR695093A publication Critical patent/FR695093A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/50—Selection of substances for gas fillings; Specified pressure thereof
FR695093D 1929-06-01 1930-05-05 Incandescent electric lamps Expired FR695093A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL46586A NL29070C (en) 1929-06-01 1929-06-01

Publications (1)

Publication Number Publication Date
FR695093A true FR695093A (en) 1930-12-11

Family

ID=10141976

Family Applications (1)

Application Number Title Priority Date Filing Date
FR695093D Expired FR695093A (en) 1929-06-01 1930-05-05 Incandescent electric lamps

Country Status (4)

Country Link
BE (1) BE370025A (en)
FR (1) FR695093A (en)
GB (1) GB335903A (en)
NL (1) NL29070C (en)

Also Published As

Publication number Publication date
GB335903A (en) 1930-10-01
BE370025A (en) 1930-06-30
NL29070C (en) 1932-03-15

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