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.)
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ATKINSON S PATENTS Ltd
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ATKINSON S PATENTS Ltd
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Application filed by ATKINSON S PATENTS LtdfiledCriticalATKINSON S PATENTS Ltd
Application grantedgrantedCritical
Publication of FR383131ApublicationCriticalpatent/FR383131A/fr
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
FR383131D1906-10-221907-10-19Lampes à incandescence électriques à pouvoir éclairant variable
ExpiredFR383131A
(fr)