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Audio transducer
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Patent number 8,824,724
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Issue date Sep 2, 2014
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J. Craig Oxford
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Speaker system
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Patent number 8,144,900
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Issue date Mar 27, 2012
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J. Craig Oxford
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Audio transducer
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Patent number 7,672,472
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Issue date Mar 2, 2010
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Iroquois Holding Co.
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J. Craig Oxford
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Spherically shaped loudspeaker
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Patent number D572236
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Issue date Jul 1, 2008
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J. Craig Oxford
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D14 - Recording, communication, or information retrieval equipment
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Loudspeaker system
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Patent number D541258
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Issue date Apr 24, 2007
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J. Craig Oxford
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D14 - Recording, communication, or information retrieval equipment
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Speaker system
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Patent number 6,628,793
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Issue date Sep 30, 2003
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Mark G. Porzilli
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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