FR839200A - Incandescent electric lamp - Google Patents

Incandescent electric lamp

Info

Publication number: FR839200A
Authority: FR; France
Prior art keywords: electric lamp; incandescent electric; incandescent; lamp; electric
Prior art date: 1937-06-12
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.)

1937-06-12

Filing date

1938-06-11

Publication date

1939-03-28

1938-06-11 Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV

1939-03-28 Application granted granted Critical

1939-03-28 Publication of FR839200A publication Critical patent/FR839200A/en

Status Expired legal-status Critical Current

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/28—Envelopes; Vessels
- H01K1/34—Double wall vessels
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/02—Incandescent bodies
- H01K1/14—Incandescent bodies characterised by the shape
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/58—Cooling arrangements
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps

FR839200D 1937-06-12 1938-06-11 Incandescent electric lamp Expired FR839200A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NL206539X		1937-06-12

Publications (1)

Publication Number	Publication Date
FR839200A true FR839200A (en)	1939-03-28

Family

ID=19778583

Family Applications (2)

Application Number	Title	Priority Date	Filing Date
FR839199D Expired FR839199A (en)	1937-06-12	1938-06-11	Incandescent electric lamp with an operating pressure greater than one atmosphere
FR839200D Expired FR839200A (en)	1937-06-12	1938-06-11	Incandescent electric lamp

Family Applications Before (1)

Application Number	Title	Priority Date	Filing Date
FR839199D Expired FR839199A (en)	1937-06-12	1938-06-11	Incandescent electric lamp with an operating pressure greater than one atmosphere

Country Status (5)

Country	Link
BE (2)	BE428542A (en)
CH (1)	CH206539A (en)
DE (2)	DE699404C (en)
FR (2)	FR839199A (en)
GB (2)	GB515704A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1112785B (en) *	1955-07-08	1961-08-17	Sylvania Electric Prod	High frequency heated incandescent lamp
BR8400807A (en) *	1983-02-25	1984-10-02	Gte Prod Corp	ELECTRIC HALOGEN / TUNGSTEN LAMP WITH PERMEATABLE ELEMENT CLOSING THE EXTERNAL HOUSING
RU2485395C1 (en) *	2012-02-22	2013-06-20	Юлия Алексеевна Щепочкина	Led lamp bulb

0
- BE BE428543D patent/BE428543A/xx unknown
- BE BE428542D patent/BE428542A/xx unknown
1938
- 1938-06-09 GB GB17180/38A patent/GB515704A/en not_active Expired
- 1938-06-10 DE DE1938N0042078 patent/DE699404C/en not_active Expired
- 1938-06-10 CH CH206539D patent/CH206539A/en unknown
- 1938-06-10 DE DEN42077D patent/DE725341C/en not_active Expired
- 1938-06-11 FR FR839199D patent/FR839199A/en not_active Expired
- 1938-06-11 FR FR839200D patent/FR839200A/en not_active Expired
- 1938-06-13 GB GB17567/38A patent/GB518016A/en not_active Expired

Also Published As

Publication number	Publication date
CH206539A (en)	1939-08-15
DE725341C (en)	1942-09-19
GB515704A (en)	1939-12-12
DE699404C (en)	1940-11-28
GB518016A (en)	1940-02-15
BE428542A (en)
BE428543A (en)
FR839199A (en)	1939-03-28

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