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Keyboard instrument
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Patent number 5,086,686
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Issue date Feb 11, 1992
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Yamaha Corporation
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Yoichi Misawa
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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Keyboard instrument
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Patent number 5,031,500
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Issue date Jul 16, 1991
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Yamaha Corporation
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Tatsuhiro Koike
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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Sound field control device
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Patent number 5,027,687
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Issue date Jul 2, 1991
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Yamaha Corporation
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Masayuki Iwamatsu
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Music synthesizer
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Patent number 4,998,960
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Issue date Mar 12, 1991
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Rose; Floyd
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Floyd D. Rose
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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Music card system
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Patent number 4,614,144
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Issue date Sep 30, 1986
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Oki Electric Industry Co., Ltd.
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Iwao Sagara
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3865001
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Patent number 3,865,001
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Issue date Feb 11, 1975
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3818115
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Patent number 3,818,115
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Issue date Jun 18, 1974
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3778525
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Patent number 3,778,525
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Issue date Dec 11, 1973
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3757046
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Patent number 3,757,046
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Issue date Sep 4, 1973
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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3718747
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Patent number 3,718,747
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Issue date Feb 27, 1973
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3673304
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Patent number 3,673,304
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Issue date Jun 27, 1972
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G10 - MUSICAL INSTRUMENTS ACOUSTICS