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Keyboard apparatus
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Issue date Jul 15, 2014
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Yamaha Corporation
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Shigeru Muramatsu
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2715850
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Issue date Aug 23, 1955
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2620700
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2554129
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2528797
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Patent number 2,528,797
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2495427
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Patent number 2,495,427
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2469668
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Patent number 2,469,668
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2419734
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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1783638
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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1383500
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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956003
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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877027
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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666138
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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470448
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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374389
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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57434
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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44566
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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43245
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G06 - COMPUTING CALCULATING COUNTING
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42518
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G10 - MUSICAL INSTRUMENTS ACOUSTICS