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Application filed by Valdemar PoulsenfiledCriticalValdemar Poulsen
Publication of CH31084ApublicationCriticalpatent/CH31084A/de
CH31084A1903-11-211903-11-21Einrichtung zum Umwandeln von Gleichstrom in Wechselstrom, bezw. von Wechselstrom in Wechselstrom mit veränderter Frequenz
CH31084A
(de)