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Application filed by Siemens AgfiledCriticalSiemens Ag
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Publication of AT99342BpublicationCriticalpatent/AT99342B/de
AT99342D1922-08-261923-06-28Einrichtung zur Bestimmung der Unterbrechungsfrequenz von Gleichstrom, insbesondere zum Betriebe von Röntgeninduktorien.
AT99342B
(de)