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Polyphonic musical tone generator
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Patent number 4,467,688
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Issue date Aug 28, 1984
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Kawai Musical Instrument Mfg. Co., Ltd.
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Ralph Deutsch
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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Polyphonic tone synthesizer
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Patent number 4,085,644
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Issue date Apr 25, 1978
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Deutsch Research Laboratories, Ltd.
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Ralph Deutsch
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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ADSR envelope generator
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Patent number 4,079,650
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Issue date Mar 21, 1978
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Deutsch Research Laboratories, Ltd.
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Ralph Deutsch
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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