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Application filed by Josef KubikfiledCriticalJosef Kubik
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Publication of AT40997BpublicationCriticalpatent/AT40997B/de
AT40997D1909-04-011909-04-01Einrichtung an Klavieren mit doppeltem Resonanzboden zur Verstärkung der Resonanz und Verschönerung der Klangfärbung.
AT40997B
(de)