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Sound synthesizing circuit
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Patent number 4,805,508
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Issue date Feb 21, 1989
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NEC Corporation
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Tomoaki Isozaki
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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Frequency generating circuit
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Patent number 4,396,909
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Issue date Aug 2, 1983
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Casio Computer Co., Ltd.
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Kazuyasu Suzuki
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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Electronic musical instrument
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Patent number 4,380,184
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Issue date Apr 19, 1983
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Matsushita Electrical Industrial Co., Ltd.
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Tetsuhiko Kaneaki
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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Music playing apparatus
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Patent number 4,309,932
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Issue date Jan 12, 1982
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James M. Baker
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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Music tone generating system
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Patent number 4,294,154
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Issue date Oct 13, 1981
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Casio Computer Co., Ltd.
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Hidetaka Fujisawa
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G06 - COMPUTING CALCULATING COUNTING
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Electronic musical instrument
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Patent number 4,282,785
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Issue date Aug 11, 1981
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Kabushiki Kaisha Kawai Gakki Seisakusho
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Nobuharu Obayashi
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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