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Fiber optic musical instruments
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Patent number 4,442,750
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Issue date Apr 17, 1984
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Optical Technologies, Inc.
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George A. Bowley
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3064515
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Patent number 3,064,515
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Issue date Nov 20, 1962
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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1995317
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Patent number 1,995,317
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Issue date Mar 26, 1935
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G10 - MUSICAL INSTRUMENTS ACOUSTICS