FR852378A - Electric incandescent gas lamp - Google Patents

Electric incandescent gas lamp

Info

Publication number: FR852378A
Authority: FR; France
Prior art keywords: gas lamp; electric incandescent; incandescent gas; electric; lamp
Prior art date: 1938-04-01
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.)

1938-04-01

Filing date

1939-03-30

Publication date

1940-01-31

1939-03-30 Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV

1940-01-31 Application granted granted Critical

1940-01-31 Publication of FR852378A publication Critical patent/FR852378A/en

Status Expired legal-status Critical Current

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/28—Envelopes; Vessels
- H01K1/32—Envelopes; Vessels provided with coatings on the walls; Vessels or coatings thereon characterised by the material thereof

FR852378D 1938-04-01 1939-03-30 Electric incandescent gas lamp Expired FR852378A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE852378X		1938-04-01

Publications (1)

Publication Number	Publication Date
FR852378A true FR852378A (en)	1940-01-31

Family

ID=9326610

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR852378D Expired FR852378A (en)	1938-04-01	1939-03-30	Electric incandescent gas lamp

Country Status (2)

Country	Link
BE (1)	BE433577A (en)
FR (1)	FR852378A (en)

1939
- 1939-03-30 FR FR852378D patent/FR852378A/en not_active Expired
- 1939-03-30 BE BE433577D patent/BE433577A/fr unknown

Also Published As

Publication number	Publication date
BE433577A (en)	1939-04-29

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