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String tuning adjuster
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Patent number 7,301,089
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Issue date Nov 27, 2007
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Kuang-Yi Liao
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3813983
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Patent number 3,813,983
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Issue date Jun 4, 1974
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3706254
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Patent number 3,706,254
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Issue date Dec 19, 1972
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3276299
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Patent number 3,276,299
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Issue date Oct 4, 1966
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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2812682
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Patent number 2,812,682
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Issue date Nov 12, 1957
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2499194
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Patent number 2,499,194
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Issue date Feb 28, 1950
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G10 - MUSICAL INSTRUMENTS ACOUSTICS