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DE38122C
(de )
Neuerung an Harmonikas und ähnlichen Musik-Instrumenten
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1984-06-14
Akkordeon
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(de )
1929-06-03
Harmonium mit Spieleinrichtung
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(de )
Klingendes Orgelpedal
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DE855499C
(de )
1954-08-09
Stimmstock fuer Akkordeons, Harmoniums u. dgl. Musikinstrumente
AT60728B
(de )
1913-08-25
Mit einer Sprechmaschine verbundenes mechanisches Musikwerk.
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Neuerungen in der Anwendung freischwingender Zungen an Musikinstrumenten