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Mass excited acoustic device
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Patent number 6,023,515
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Issue date Feb 8, 2000
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Motorola, Inc.
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John M. McKee
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Inertial acoustic pickup
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Patent number 5,552,562
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Issue date Sep 3, 1996
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Motorola, Inc.
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Allen D. Hertz
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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Electromagnetic resonant vibrator
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Patent number 5,107,540
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Issue date Apr 21, 1992
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Motorola, Inc.
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Charles W. Mooney
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B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
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Battery door latching mechanism
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Patent number 4,583,774
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Issue date Apr 22, 1986
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Motorola, Inc.
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Irving H. Holden
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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