DE265944C
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DE82173C
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html )
DE57943C
(de )
Streichpianino
DE101353C
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html )
DE61584C
(de )
Pedalzither
DE546389C
(de )
1932-03-14
Vorrichtung zur Bedienung von Tasteninstrumenten
DE142178C
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html )
DE78518C
(de )
Accordzither
DE584558C
(de )
1935-01-03
Harfenartiges Saiteninstrument
DE205063C
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html )
DE231559C
(de )
1911-02-24
Auswechselbare Notenplatte für Harmonien
DE147250C
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DE87746C
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DE238630C
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html )
DE56724C
(de )
Dämpfervorrichtung an Harfen-Pianos
DE59178C
(de )
Mechanisches Musikwerk
DE60119C
(de )
Transponirvorrichtung für Tasteninstrumente
DE20827C
(de )
Neuerungen an Pianofortes
DE103087C
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DE288074C
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DE99478C
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DE268911C
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html )
DE18590C
(de )
Neuerungen an Klavieren mit Klanggabeln
DE238628C
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DE102567C
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html )