FR807340A - Perfectionnements aux lampes à incandescence - Google Patents

Perfectionnements aux lampes à incandescence

Info

Publication number: FR807340A
Authority: FR; France
Prior art keywords: incandescent lamp; incandescent; lamp; lamp improvements
Prior art date: 1935-06-15
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

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.)

1935-06-15

Filing date

1936-06-15

Publication date

1937-01-09

1936-06-15 Application filed by Compagnie des Lampes filed Critical Compagnie des Lampes

1937-01-09 Application granted granted Critical

1937-01-09 Publication of FR807340A publication Critical patent/FR807340A/fr

Status Expired legal-status Critical Current

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 Perfectionnements aux lampes à incandescence Expired FR807340A (fr)

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 (fr)	1937-01-09

Family

ID=21833948

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR807340D Expired FR807340A (fr)	1935-06-15	1936-06-15	Perfectionnements aux lampes à incandescence

Country Status (4)

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

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1045539B (de) *	1952-04-12	1958-12-04	Polaroid Corp	Elektrische Gluehlampe mit einem Tantalkarbidfaden und Verfahren zu ihrer Herstellung
NL108831C (fr) *	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 (fr) *	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
WO2003075315A2 (fr) *	2002-03-04	2003-09-12	Ip2H Ag	Source de lumiere et procede de regeneration d'une source de lumiere

1935
- 1935-06-15 US US26820A patent/US2072788A/en not_active Expired - Lifetime
- 1935-10-01 DE DEP71883D patent/DE644581C/de not_active Expired
1936
- 1936-06-11 GB GB16339/36A patent/GB476391A/en not_active Expired
- 1936-06-15 FR FR807340D patent/FR807340A/fr not_active Expired

Also Published As

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

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