FR839199A - Incandescent electric lamp with an operating pressure greater than one atmosphere - Google Patents

Incandescent electric lamp with an operating pressure greater than one atmosphere

Info

Publication number
FR839199A
FR839199A FR839199DA FR839199A FR 839199 A FR839199 A FR 839199A FR 839199D A FR839199D A FR 839199DA FR 839199 A FR839199 A FR 839199A
Authority
FR
France
Prior art keywords
atmosphere
operating pressure
pressure greater
electric lamp
incandescent 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 FR839199A publication Critical patent/FR839199A/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/02—Incandescent bodies
    • H01K1/14—Incandescent bodies characterised by the shape
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/58—Cooling arrangements
    • 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
FR839199D 1937-06-12 1938-06-11 Incandescent electric lamp with an operating pressure greater than one atmosphere Expired FR839199A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL206539X 1937-06-12

Publications (1)

Publication Number Publication Date
FR839199A true FR839199A (en) 1939-03-28

Family

ID=19778583

Family Applications (2)

Application Number Title Priority Date Filing Date
FR839200D Expired FR839200A (en) 1937-06-12 1938-06-11 Incandescent electric lamp
FR839199D Expired FR839199A (en) 1937-06-12 1938-06-11 Incandescent electric lamp with an operating pressure greater than one atmosphere

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR839200D Expired FR839200A (en) 1937-06-12 1938-06-11 Incandescent electric lamp

Country Status (5)

Country Link
BE (2) BE428543A (en)
CH (1) CH206539A (en)
DE (2) DE725341C (en)
FR (2) FR839200A (en)
GB (2) GB515704A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1112785B (en) * 1955-07-08 1961-08-17 Sylvania Electric Prod High frequency heated incandescent lamp
BR8400807A (en) * 1983-02-25 1984-10-02 Gte Prod Corp ELECTRIC HALOGEN / TUNGSTEN LAMP WITH PERMEATABLE ELEMENT CLOSING THE EXTERNAL HOUSING
RU2485395C1 (en) * 2012-02-22 2013-06-20 Юлия Алексеевна Щепочкина Led lamp bulb

Also Published As

Publication number Publication date
BE428543A (en)
GB515704A (en) 1939-12-12
GB518016A (en) 1940-02-15
BE428542A (en)
FR839200A (en) 1939-03-28
DE725341C (en) 1942-09-19
DE699404C (en) 1940-11-28
CH206539A (en) 1939-08-15

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