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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Marc Frederic De
Original Assignee
Marc Frederic De
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Filing date
Publication date
Application filed by Marc Frederic DefiledCriticalMarc Frederic De
Priority to ES19424ApriorityCriticalpatent/ES19424A1/es
Publication of ES19424A1publicationCriticalpatent/ES19424A1/es
ES19424A1896-07-281896-07-28Un procedimiento para la fabricación de una nueva clase de filamento para lámparas eléctricas de incandescencia.
ExpiredES19424A1
(es)