FR1063141A - Improvements in the construction of parabolic bulb electric lamps - Google Patents

Improvements in the construction of parabolic bulb electric lamps

Info

Publication number: FR1063141A
Authority: FR; France
Prior art keywords: parabolic; construction; electric lamps; bulb electric; bulb
Prior art date: 1951-06-07
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.)

1951-06-07

Filing date

1952-06-05

Publication date

1954-04-29

1952-06-05 Application filed by Compagnie des Lampes filed Critical Compagnie des Lampes

1954-04-29 Application granted granted Critical

1954-04-29 Publication of FR1063141A publication Critical patent/FR1063141A/en

Status Expired legal-status Critical Current

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/28—Envelopes; Vessels

FR1063141D 1951-06-07 1952-06-05 Improvements in the construction of parabolic bulb electric lamps Expired FR1063141A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB1353251A GB709815A (en)	1951-06-07	1951-06-07	Improvements in and relating to electric filament lamps with parabolic envelopes

Publications (1)

Publication Number	Publication Date
FR1063141A true FR1063141A (en)	1954-04-29

Family

ID=10024690

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR1063141D Expired FR1063141A (en)	1951-06-07	1952-06-05	Improvements in the construction of parabolic bulb electric lamps

Country Status (2)

Country	Link
FR (1)	FR1063141A (en)
GB (1)	GB709815A (en)

1951
- 1951-06-07 GB GB1353251A patent/GB709815A/en not_active Expired
1952
- 1952-06-05 FR FR1063141D patent/FR1063141A/en not_active Expired

Also Published As

Publication number	Publication date
GB709815A (en)	1954-06-02

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