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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Siemens and Halske AG
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Siemens and Halske AG
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Application filed by Siemens and Halske AGfiledCriticalSiemens and Halske AG
Application grantedgrantedCritical
Publication of FR390578ApublicationCriticalpatent/FR390578A/fr
H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
H01K3/02—Manufacture of incandescent bodies
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Engineering & Computer Science
(AREA)
Manufacturing & Machinery
(AREA)
FR390578D1908-05-261908-05-26Procédé de fabrication de filaments métalliques sans carbone pour la lumière électrique à incandescence
ExpiredFR390578A
(fr)