DK13839C
(en)
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Clapping party for Forte pianos.
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FR418472A
(en)
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Piano violin
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GB191111003A
(en)
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An Improved Violin Piano.
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CH50840A
(en)
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Self-playing piano
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CH51653A
(en)
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Piano zither
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DK13106C
(en)
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Generates for rapid electrical oscillations.
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FR413924A
(en)
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Piano Improvements
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DK14980C
(en)
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Voice recorder for musical instruments.
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DK12213C
(en)
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String piano.
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FR428467A
(en)
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Mechanism for string pianos
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AT54402B
(en)
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Thermometrograph.
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AT52433B
(en)
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Tailpiece.
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DK12176C
(en)
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Percussion for Clocks.
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FR415497A
(en)
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Violin
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DK13015C
(en)
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Excavator for Trambulering.
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AT52432B
(en)
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Tilt scale.
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FR425307A
(en)
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Piano Improvements
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FR17551E
(en)
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Piano Improvements
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FR15851E
(en)
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Piano Improvements
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FR15850E
(en)
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Piano Improvements
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FR443506A
(en)
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Piano Improvements
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FR447620A
(en)
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Piano Improvements
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FR438443A
(en)
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Piano Improvements
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DK14949C
(en)
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Resonance box for acoustic instruments.
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ES48595A1
(en)
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Scale toilets.
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