FR855226A - Electric incandescent gas-filled lamp - Google Patents

Electric incandescent gas-filled lamp

Info

Publication number: FR855226A
Authority: FR; France
Prior art keywords: electric incandescent; incandescent gas; filled lamp; lamp; filled
Prior art date: 1938-05-24
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.)

Osa Participations Industrielles SA

Original Assignee

Osa Participations Industrielles SA

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.)

1938-05-24

Filing date

1939-05-24

Publication date

1940-05-06

1939-05-24 Application filed by Osa Participations Industrielles SA filed Critical Osa Participations Industrielles SA

1940-05-06 Application granted granted Critical

1940-05-06 Publication of FR855226A publication Critical patent/FR855226A/en

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

FR855226D 1938-05-24 1939-05-24 Electric incandescent gas-filled lamp Expired FR855226A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE2208987X		1938-05-24

Publications (1)

Publication Number	Publication Date
FR855226A true FR855226A (en)	1940-05-06

Family

ID=7990178

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR855226D Expired FR855226A (en)	1938-05-24	1939-05-24	Electric incandescent gas-filled lamp

Country Status (2)

Country	Link
US (1)	US2208987A (en)
FR (1)	FR855226A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2462837A (en) *	1945-10-08	1949-03-01	Tung Sol Lamp Works Inc	Incandescent lamp
BE487465A (en) *	1948-02-21
US2560953A (en) *	1949-06-30	1951-07-17	Sylvania Electric Prod	Electric gaseous discharge device electrode
US2749462A (en) *	1952-05-31	1956-06-05	Gen Electric	High pressure mercury vapor lamp with zirconium getter
NL98429C (en) *	1954-05-28
US3174026A (en) *	1962-06-20	1965-03-16	Budd Co	Method and means of circumventing cathode maintenance in electron beam devices
GB1166943A (en) *	1967-02-24	1969-10-15	Edwards High Vacuum Int Ltd	Cathode Arrangements for Getter Ion Pumps
US4280076A (en) *	1978-10-18	1981-07-21	Duro-Test Corporation	Incandescent lamp with structure for collecting evaporated filament material

1939
- 1939-05-18 US US274440A patent/US2208987A/en not_active Expired - Lifetime
- 1939-05-24 FR FR855226D patent/FR855226A/en not_active Expired

Also Published As

Publication number	Publication date
US2208987A (en)	1940-07-23

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