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DE213077C
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DE71410C
(de )
Ventileinrichtung für mit Druckluft arbeitende Musikwerke
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DE632030C
(de )
1936-07-02
Doppelsitzventil
DE503548C
(de )
1930-07-24
Einrichtung an Orgelpfeifen zur AEnderung der Tonstaerke
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DE3232501C2
(de )
1984-06-14
Akkordeon
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DE154727C
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DE28057C
(de )
Neuerung an Registerzügen für Accordeons
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AT151098B
(de )
1937-10-25
Mit Zungeninstrument kombiniertes Klavier.
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1991-08-22
DE125796C
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