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Application filed by Limited NeophonefiledCriticalLimited Neophone
Publication of CH36759ApublicationCriticalpatent/CH36759A/de
CH36759A1906-03-061906-03-06Einrichtung zum Aufzeichnen und Wiederhervorbringen von Schallwellen auf und mit den Scheiben von Sprechmaschinen
CH36759A
(de)