DK1776C
(en)
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Mechanical Musical Instrument.
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ES23295A1
(en)
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Improvements in musical string instruments.
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CH16956A
(en)
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Tracé instrument
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CH17511A
(en)
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Mechanical musical mechanism
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CH17973A
(en)
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Mechanical string-tone musical mechanism
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ES23355A1
(en)
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A musical instrument called the Harmonicorde.
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ES28751A1
(en)
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Improvements in musical instruments.
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CH14438A
(en)
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Mechanical musical instrument
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FR407995A
(en)
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Mechanical bow musical instrument
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CH20542A
(en)
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Music instrument
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FR332673A
(en)
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Piano fingerboard
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DK1945C
(en)
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Electric Measuring Instrument.
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CH17733A
(en)
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Perspector-pantograph
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CH18924A
(en)
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Mechanical musical mechanism
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CH19384A
(en)
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Mechanical musical mechanism
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CH19316A
(en)
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Mechanical musical mechanism
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CH21305A
(en)
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Mechanical musical mechanism
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CH22105A
(en)
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Mechanical musical mechanism
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CA60919A
(en)
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Musical note reading device
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ES25163A1
(en)
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A violin piano.
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DK3722C
(en)
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Sheet music holder for mechanical musical instruments.
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CH15280A
(en)
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Music instrument
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ES35035A1
(en)
|
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Improvements in string musical instruments.
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ES17680A1
(en)
|
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Improvements in musical instruments.
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CH16196A
(en)
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Musical mechanism with box
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