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3596553
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Patent number 3,596,553
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Issue date Aug 3, 1971
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3406083
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Patent number 3,406,083
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Issue date Oct 15, 1968
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3367227
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Patent number 3,367,227
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Issue date Feb 6, 1968
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3296917
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Patent number 3,296,917
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Issue date Jan 10, 1967
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3280686
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Patent number 3,280,686
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Issue date Oct 25, 1966
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3228277
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Patent number 3,228,277
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Issue date Jan 11, 1966
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3171320
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Patent number 3,171,320
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Issue date Mar 2, 1965
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3167993
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Patent number 3,167,993
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Issue date Feb 2, 1965
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3162082
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Patent number 3,162,082
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Issue date Dec 22, 1964
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3154993
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Patent number 3,154,993
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Issue date Nov 3, 1964
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3147659
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Patent number 3,147,659
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3139780
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Patent number 3,139,780
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Issue date Jul 7, 1964
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3139782
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Patent number 3,139,782
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Issue date Jul 7, 1964
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3139781
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Patent number 3,139,781
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Issue date Jul 7, 1964
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3076371
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Patent number 3,076,371
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Issue date Feb 5, 1963
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3058382
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Patent number 3,058,382
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3040614
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Patent number 3,040,614
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3012459
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Patent number 3,012,459
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Issue date Dec 12, 1961
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2963934
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Patent number 2,963,934
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2947210
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Patent number 2,947,210
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Issue date Aug 2, 1960
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2873638
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Patent number 2,873,638
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2844984
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Patent number 2,844,984
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2806398
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Patent number 2,806,398
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2715850
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Patent number 2,715,850
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2691319
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Patent number 2,691,319
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Issue date Oct 12, 1954
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2637238
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Patent number 2,637,238
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Issue date May 5, 1953
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2634648
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Patent number 2,634,648
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2577573
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Patent number 2,577,573
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G10 - MUSICAL INSTRUMENTS ACOUSTICS