FR779256A - Improvements to electric lamps - Google Patents

Improvements to electric lamps

Info

Publication number: FR779256A
Authority: FR; France
Prior art keywords: electric lamps; lamps; electric
Prior art date: 1933-10-06
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.)

Compagnie des Lampes

Original Assignee

Compagnie des Lampes

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.)

1933-10-06

Filing date

1934-10-06

Publication date

1935-04-02

1934-10-06 Application filed by Compagnie des Lampes filed Critical Compagnie des Lampes

1935-04-02 Application granted granted Critical

1935-04-02 Publication of FR779256A publication Critical patent/FR779256A/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
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/10—Shields, screens, or guides for influencing the discharge
- H01J61/106—Shields, screens, or guides for influencing the discharge using magnetic means

FR779256D 1933-10-06 1934-10-06 Improvements to electric lamps Expired FR779256A (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
GB27577/33A GB429750A (en)	1933-10-06	1933-10-06	Improvements in and relating to electric lamps
GB35722/34A GB448707A (en)	1933-10-06	1934-12-12	Improvements in and relating to electric discharge lamps

Publications (1)

Publication Number	Publication Date
FR779256A true FR779256A (en)	1935-04-02

Family

ID=32510438

Family Applications (2)

Application Number	Title	Priority Date	Filing Date
FR779256D Expired FR779256A (en)	1933-10-06	1934-10-06	Improvements to electric lamps
FR46827D Expired FR46827E (en)	1933-10-06	1935-12-10	Improvements to electric lamps

Family Applications After (1)

Application Number	Title	Priority Date	Filing Date
FR46827D Expired FR46827E (en)	1933-10-06	1935-12-10	Improvements to electric lamps

Country Status (5)

Country	Link
US (1)	US2030430A (en)
DE (1)	DE654969C (en)
FR (2)	FR779256A (en)
GB (2)	GB429750A (en)
NL (1)	NL42568C (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2767343A (en) *	1954-04-05	1956-10-16	Mcgraw Electric Co	Electric gaseous discharge device
DE1098607B (en) *	1959-04-24	1961-02-02	Licentia Gmbh	High pressure lamp
HU186682B (en) *	1983-04-08	1985-09-30	Tungsram Reszvenytarsasag	High-frequency gas-discharge lamp system
CA2126172C (en) *	1993-06-25	1998-04-28	Minoru Yamamoto	Luminaire_with interference reduction
NL1026622C2 (en) *	2004-07-09	2006-01-10	Crossworks Contra Consulting B	Gas discharge lamp with stabilizing coil.

1933
- 1933-10-06 GB GB27577/33A patent/GB429750A/en not_active Expired
1934
- 1934-10-04 US US746912A patent/US2030430A/en not_active Expired - Lifetime
- 1934-10-06 FR FR779256D patent/FR779256A/en not_active Expired
- 1934-12-12 GB GB35722/34A patent/GB448707A/en not_active Expired
1935
- 1935-08-29 DE DEP71722D patent/DE654969C/en not_active Expired
- 1935-10-03 NL NL75048A patent/NL42568C/xx active
- 1935-12-10 FR FR46827D patent/FR46827E/en not_active Expired

Also Published As

Publication number	Publication date
GB429750A (en)	1935-06-06
DE654969C (en)	1938-01-05
US2030430A (en)	1936-02-11
GB448707A (en)	1936-06-12
NL42568C (en)	1938-02-15
FR46827E (en)	1936-09-12

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