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Musical expression pedal
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Patent number 4,438,674
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Issue date Mar 27, 1984
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Richard J. A. Lawson
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3922944
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Patent number 3,922,944
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Issue date Dec 2, 1975
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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3921491
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Patent number 3,921,491
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Issue date Nov 25, 1975
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3844192
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Patent number 3,844,192
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Issue date Oct 29, 1974
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3764723
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Patent number 3,764,723
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Issue date Oct 9, 1973
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3619469
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Patent number 3,619,469
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Issue date Nov 9, 1971
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3602628
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Patent number 3,602,628
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Issue date Aug 31, 1971
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3598892
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Patent number 3,598,892
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Issue date Aug 10, 1971
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3585893
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Patent number 3,585,893
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Issue date Jun 22, 1971
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3461217
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Patent number 3,461,217
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Issue date Aug 12, 1969
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3342094
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Patent number 3,342,094
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Issue date Sep 19, 1967
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3098888
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Patent number 3,098,888
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Issue date Jul 23, 1963
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3064517
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Patent number 3,064,517
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Issue date Nov 20, 1962
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3054318
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Patent number 3,054,318
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Issue date Sep 18, 1962
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3051032
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Patent number 3,051,032
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Issue date Aug 28, 1962
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3049959
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Patent number 3,049,959
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Issue date Aug 21, 1962
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3039346
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Patent number 3,039,346
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Issue date Jun 19, 1962
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G10 - MUSICAL INSTRUMENTS ACOUSTICS