FR807340A - Incandescent lamp improvements - Google Patents

Incandescent lamp improvements

Info

Publication number
FR807340A
FR807340A FR807340DA FR807340A FR 807340 A FR807340 A FR 807340A FR 807340D A FR807340D A FR 807340DA FR 807340 A FR807340 A FR 807340A
Authority
FR
France
Prior art keywords
incandescent lamp
incandescent
lamp
lamp improvements
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.)
Compagnie des Lampes
Original Assignee
Compagnie des Lampes
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 Compagnie des Lampes filed Critical Compagnie des Lampes
Application granted granted Critical
Publication of FR807340A publication Critical patent/FR807340A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/52—Means for obtaining or maintaining the desired pressure within the vessel
    • H01K1/54—Means for absorbing or absorbing gas, or for preventing or removing efflorescence, e.g. by gettering
FR807340D 1935-06-15 1936-06-15 Incandescent lamp improvements Expired FR807340A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US26820A US2072788A (en) 1935-06-15 1935-06-15 Tantalum carbide lamp

Publications (1)

Publication Number Publication Date
FR807340A true FR807340A (en) 1937-01-09

Family

ID=21833948

Family Applications (1)

Application Number Title Priority Date Filing Date
FR807340D Expired FR807340A (en) 1935-06-15 1936-06-15 Incandescent lamp improvements

Country Status (4)

Country Link
US (1) US2072788A (en)
DE (1) DE644581C (en)
FR (1) FR807340A (en)
GB (1) GB476391A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1045539B (en) * 1952-04-12 1958-12-04 Polaroid Corp Electric incandescent lamp with a tantalum carbide filament and process for its manufacture
NL108831C (en) * 1956-01-16
US2928977A (en) * 1958-12-19 1960-03-15 Gen Electric Incandescent lamp
US3022438A (en) * 1959-09-10 1962-02-20 Polaroid Corp Electric lamps
US3022436A (en) * 1960-01-29 1962-02-20 Polaroid Corp Electric lamps
NL260575A (en) * 1960-01-29
US3277330A (en) * 1960-07-15 1966-10-04 Polaroid Corp Incandescent lamp with tac filament and cyanide-radical producing and halogen atmosphere
US3132278A (en) * 1961-09-18 1964-05-05 Gen Electric Iodine cycle incandescent lamps
US3433725A (en) * 1966-04-15 1969-03-18 Us Air Force Method of making metal or metalloid carbide yarn by decomposing the respective chloride in the presence of carbon yarn
US3441777A (en) * 1966-06-01 1969-04-29 Gen Telephone & Elect Elements for incandescent devices
US4297611A (en) * 1979-10-02 1981-10-27 Wagner Electric Corporation Control of tungsten filament erosion in a halogen lamp
KR20040097144A (en) * 2002-03-04 2004-11-17 이페2하 아게 Source of light and method for regenerating a source of light

Also Published As

Publication number Publication date
GB476391A (en) 1937-12-08
DE644581C (en) 1937-05-08
US2072788A (en) 1937-03-02

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