FR840473A - Electric discharge tube - Google Patents

Electric discharge tube

Info

Publication number: FR840473A
Authority: FR; France
Prior art keywords: electric discharge; discharge tube; tube; electric; discharge
Prior art date: 1937-07-09
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.)

1937-07-09

Filing date

1938-07-08

Publication date

1939-04-26

1938-07-08 Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV

1939-04-26 Application granted granted Critical

1939-04-26 Publication of FR840473A publication Critical patent/FR840473A/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
- H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr

FR840473D 1937-07-09 1938-07-08 Electric discharge tube Expired FR840473A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE204073X		1937-07-09

Publications (1)

Publication Number	Publication Date
FR840473A true FR840473A (en)	1939-04-26

Family

ID=5779929

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR840473D Expired FR840473A (en)	1937-07-09	1938-07-08	Electric discharge tube

Country Status (3)

Country	Link
CH (1)	CH204073A (en)
FR (1)	FR840473A (en)
GB (1)	GB502321A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
AT300121B (en) *	1968-11-22	1972-07-10	Egyesuelt Izzolampa	Process for producing discharge lamps without suction tubes
CA2422433A1 (en) *	2002-05-16	2003-11-16	Walter P. Lapatovich	Electric lamp with condensate reservoir and method of operation thereof

1938
- 1938-07-06 GB GB20018/38A patent/GB502321A/en not_active Expired
- 1938-07-07 CH CH204073D patent/CH204073A/en unknown
- 1938-07-08 FR FR840473D patent/FR840473A/en not_active Expired

Also Published As

Publication number	Publication date
CH204073A (en)	1939-04-15
GB502321A (en)	1939-03-15

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