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3910225
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Patent number 3,910,225
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Issue date Oct 7, 1975
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3769870
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3102975
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Patent number 3,102,975
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Issue date Sep 3, 1963
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3084588
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Patent number 3,084,588
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2952013
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Patent number 2,952,013
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Issue date Sep 6, 1960
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2923931
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Patent number 2,923,931
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2866932
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Issue date Dec 30, 1958
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2820960
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Patent number 2,820,960
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2810124
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Patent number 2,810,124
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Issue date Oct 15, 1957
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2754504
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Patent number 2,754,504
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Issue date Jul 10, 1956
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2719968
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Patent number 2,719,968
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Issue date Oct 4, 1955
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2707276
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Patent number 2,707,276
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Issue date Apr 26, 1955
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2523970
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Patent number 2,523,970
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2512912
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Patent number 2,512,912
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2444576
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Patent number 2,444,576
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Issue date Jul 6, 1948
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2428648
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Patent number 2,428,648
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2386738
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Issue date Oct 9, 1945
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2299591
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Patent number 2,299,591
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2271084
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Patent number 2,271,084
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Issue date Jan 27, 1942
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2033078
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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1942360
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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1940206
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Patent number 1,940,206
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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1938712
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Patent number 1,938,712
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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1938713
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Patent number 1,938,713
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Issue date Dec 12, 1933
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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1927901
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Patent number 1,927,901
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Issue date Sep 26, 1933
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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1921090
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Patent number 1,921,090
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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1823820
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Patent number 1,823,820
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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1817032
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Patent number 1,817,032
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G10 - MUSICAL INSTRUMENTS ACOUSTICS