FR820948A - Lamp comprising an electric discharge tube which contains metallic vapor under high pressure - Google Patents

Lamp comprising an electric discharge tube which contains metallic vapor under high pressure

Info

Publication number: FR820948A
Authority: FR; France
Prior art keywords: lamp; high pressure; under high; discharge tube; electric discharge
Prior art date: 1936-04-24
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.)

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.)

1936-04-24

Filing date

1937-04-22

Publication date

1937-11-22

1937-04-22 Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV

1937-11-22 Application granted granted Critical

1937-11-22 Publication of FR820948A publication Critical patent/FR820948A/en

Status Expired legal-status Critical Current

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/96—Lamps with light-emitting discharge path and separately-heated incandescent body within a common envelope, e.g. for simulating daylight

FR820948D 1936-04-24 1937-04-22 Lamp comprising an electric discharge tube which contains metallic vapor under high pressure Expired FR820948A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE477747X		1936-04-24

Publications (1)

Publication Number	Publication Date
FR820948A true FR820948A (en)	1937-11-22

Family

ID=6542154

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR820948D Expired FR820948A (en)	1936-04-24	1937-04-22	Lamp comprising an electric discharge tube which contains metallic vapor under high pressure

Country Status (5)

Country	Link
US (1)	US2177695A (en)
BE (1)	BE421199A (en)
FR (1)	FR820948A (en)
GB (1)	GB477747A (en)
NL (1)	NL46550C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2668930A (en) *	1950-10-18	1954-02-09	Gen Electric	Protective system
US2723366A (en) *	1950-11-13	1955-11-08	Gen Electric	Starting and operating circuit for high pressure gaseous discharge device

0
- BE BE421199D patent/BE421199A/xx unknown
- NL NL46550D patent/NL46550C/xx active
1937
- 1937-04-12 US US136447A patent/US2177695A/en not_active Expired - Lifetime
- 1937-04-21 GB GB11444/37A patent/GB477747A/en not_active Expired
- 1937-04-22 FR FR820948D patent/FR820948A/en not_active Expired

Also Published As

Publication number	Publication date
US2177695A (en)	1939-10-31
NL46550C (en)
BE421199A (en)
GB477747A (en)	1938-01-05

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