FR544608A - Incandescent electric lamp - Google Patents

Incandescent electric lamp

Info

Publication number: FR544608A
Authority: FR; France
Prior art keywords: electric lamp; incandescent electric; incandescent; lamp; electric
Prior art date: 1921-12-15
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

French (fr)

Inventor

Emil Rohner

Eduard Simic

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.)

1921-12-15

Filing date

1921-12-15

Publication date

1922-09-26

1921-12-15 Application filed filed Critical

1922-09-26 Application granted granted Critical

1922-09-26 Publication of FR544608A publication Critical patent/FR544608A/en

Status Expired legal-status Critical Current

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K9/00—Lamps having two or more incandescent bodies separately heated
- H01K9/02—Lamps having two or more incandescent bodies separately heated to provide substitution in the event of failure of one of the bodies
- H01K9/04—Lamps having two or more incandescent bodies separately heated to provide substitution in the event of failure of one of the bodies with built-in manually operated switch

FR544608D 1921-12-15 1921-12-15 Incandescent electric lamp Expired FR544608A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR544608T		1921-12-15

Publications (1)

Publication Number	Publication Date
FR544608A true FR544608A (en)	1922-09-26

Family

ID=8932401

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR544608D Expired FR544608A (en)	1921-12-15	1921-12-15	Incandescent electric lamp

Country Status (1)

Country	Link
FR (1)	FR544608A (en)

1921
- 1921-12-15 FR FR544608D patent/FR544608A/en not_active Expired

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