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Pipe organ doorbell
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Patent number 10,846,998
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Issue date Nov 24, 2020
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Stephan R. Hewitt
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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Organ stop switching system
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Patent number 4,173,167
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Issue date Nov 6, 1979
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CBS, Inc.
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Donald E. Stanley
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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Compact chord organ
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Patent number 4,091,707
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Issue date May 30, 1978
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Graber-Rogg, Inc.
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Harold B. Martin
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3927596
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Patent number 3,927,596
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Issue date Dec 23, 1975
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3745874
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Patent number 3,745,874
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Issue date Jul 17, 1973
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3744364
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Patent number 3,744,364
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Issue date Jul 10, 1973
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3698276
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Patent number 3,698,276
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Issue date Oct 17, 1972
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3670617
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Patent number 3,670,617
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Issue date Jun 20, 1972
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3665092
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Patent number 3,665,092
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Issue date May 23, 1972
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3608415
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Patent number 3,608,415
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Issue date Sep 28, 1971
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3603170
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Patent number 3,603,170
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Issue date Sep 7, 1971
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3468208
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Patent number 3,468,208
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Issue date Sep 23, 1969
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3349660
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Patent number 3,349,660
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Issue date Oct 31, 1967
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3254553
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Patent number 3,254,553
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Issue date Jun 7, 1966
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3204511
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Patent number 3,204,511
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Issue date Sep 7, 1965
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3188903
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Patent number 3,188,903
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Issue date Jun 15, 1965
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3187618
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Patent number 3,187,618
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Issue date Jun 8, 1965
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3138052
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Patent number 3,138,052
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Issue date Jun 23, 1964
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3083608
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Patent number 3,083,608
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Issue date Apr 2, 1963
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3063326
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Patent number 3,063,326
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Issue date Nov 13, 1962
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3063327
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Patent number 3,063,327
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Issue date Nov 13, 1962
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G10 - MUSICAL INSTRUMENTS ACOUSTICS