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Application filed by Bbc Brown Boveri & CiefiledCriticalBbc Brown Boveri & Cie
Application grantedgrantedCritical
Publication of AT188471BpublicationCriticalpatent/AT188471B/de
AT188471D1953-08-261954-08-21Einrichtung für die Steuerung und Überwachung der Geschwindigkeit von elektrisch angetriebenen Fördermaschinen
AT188471B
(de)