FR982309A - Lampe à incandescence - Google Patents

Lampe à incandescence

Info

Publication number: FR982309A
Authority: FR; France
Prior art keywords: incandescent lamp; incandescent; lamp
Prior art date: 1948-03-05
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.)

1948-03-05

Filing date

1949-03-03

Publication date

1951-06-08

1949-03-03 Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV

1951-06-08 Application granted granted Critical

1951-06-08 Publication of FR982309A publication Critical patent/FR982309A/fr

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
- H01K1/325—Reflecting coating
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/40—Leading-in conductors

FR982309D 1948-03-05 1949-03-03 Lampe à incandescence Expired FR982309A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NL270680X		1948-03-05

Publications (1)

Publication Number	Publication Date
FR982309A true FR982309A (fr)	1951-06-08

Family

ID=19781918

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR982309D Expired FR982309A (fr)	1948-03-05	1949-03-03	Lampe à incandescence

Country Status (7)

Country	Link
US (1)	US2488751A (fr)
BE (1)	BE487695A (fr)
CH (1)	CH270680A (fr)
DE (1)	DE813278C (fr)
FR (1)	FR982309A (fr)
GB (1)	GB657243A (fr)
NL (1)	NL69920C (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2561033A (en) *	1950-12-02	1951-07-17	Odds Charles	Headlight
US2692347A (en) *	1951-03-28	1954-10-19	Westinghouse Electric Corp	Metalized stems for low-pressure discharge tubes
US2859368A (en) *	1951-10-20	1958-11-04	Sylvania Electric Prod	Heat lamp
BE518131A (fr) *	1952-03-04
US2843778A (en) *	1952-12-22	1958-07-15	Gen Motors Corp	Light bulb
US2818521A (en) *	1954-01-14	1957-12-31	Scarborough Associates Inc	Lamp
US2766394A (en) *	1955-02-18	1956-10-09	Darsie George	Headlight
NL252232A (fr) *	1959-06-02	1900-01-01
GB904469A (en) *	1960-02-11	1962-08-29	Thorn Electrical Ind Ltd	Improvements in and relating to projection lamps
NL276950A (fr) *	1961-04-18
US4227113A (en) *	1978-10-18	1980-10-07	Duro-Test Corporation	Incandescent electric lamp with partial light transmitting coating
US5677983A (en) *	1995-01-11	1997-10-14	Nauchno-Proizvodstvennaya Firma "Adonis"	Light beam heater with light source and reflector having two ellipsoidal sections and a truncated spherical surface there between

0
- BE BE487695D patent/BE487695A/xx unknown
- NL NL69920D patent/NL69920C/xx active
1949
- 1949-02-23 US US77782A patent/US2488751A/en not_active Expired - Lifetime
- 1949-02-24 DE DEP34976D patent/DE813278C/de not_active Expired
- 1949-03-02 GB GB5713/49A patent/GB657243A/en not_active Expired
- 1949-03-03 CH CH270680D patent/CH270680A/de unknown
- 1949-03-03 FR FR982309D patent/FR982309A/fr not_active Expired

Also Published As

Publication number	Publication date
NL69920C (fr)
DE813278C (de)	1951-09-10
CH270680A (de)	1950-09-15
GB657243A (en)	1951-09-12
BE487695A (fr)
US2488751A (en)	1949-11-22

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