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3419668
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Issue date Dec 31, 1968
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3402251
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Patent number 3,402,251
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3375320
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Patent number 3,375,320
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3278671
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Patent number 3,278,671
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Issue date Oct 11, 1966
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3193607
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Patent number 3,193,607
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3104581
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Patent number 3,104,581
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3084584
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Patent number 3,084,584
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Issue date Apr 9, 1963
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3083605
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Patent number 3,083,605
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3059517
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Patent number 3,059,517
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3014396
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Patent number 3,014,396
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2983178
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Patent number 2,983,178
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2964986
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Patent number 2,964,986
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2938419
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2821879
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2798397
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2787183
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2773943
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Patent number 2,773,943
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2772593
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2764051
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Patent number 2,764,051
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2658420
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2577288
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Patent number 2,577,288
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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2575142
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Patent number 2,575,142
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2439551
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G10 - MUSICAL INSTRUMENTS ACOUSTICS