FR844304A - Incandescent electric lamp - Google Patents

Incandescent electric lamp

Info

Publication number
FR844304A
FR844304A FR844304DA FR844304A FR 844304 A FR844304 A FR 844304A FR 844304D A FR844304D A FR 844304DA FR 844304 A FR844304 A FR 844304A
Authority
FR
France
Prior art keywords
electric lamp
incandescent electric
incandescent
lamp
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 FR844304A publication Critical patent/FR844304A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
    • H01K1/34—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
FR844304D 1937-10-04 1938-10-04 Incandescent electric lamp Expired FR844304A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL205006X 1937-10-04

Publications (1)

Publication Number Publication Date
FR844304A true FR844304A (en) 1939-07-24

Family

ID=19778509

Family Applications (1)

Application Number Title Priority Date Filing Date
FR844304D Expired FR844304A (en) 1937-10-04 1938-10-04 Incandescent electric lamp

Country Status (4)

Country Link
BE (1) BE430474A (en)
CH (1) CH205006A (en)
FR (1) FR844304A (en)
GB (1) GB504893A (en)

Families Citing this family (1)

* 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

Also Published As

Publication number Publication date
GB504893A (en) 1939-05-02
CH205006A (en) 1939-05-31
BE430474A (en)

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