Total properties:
13
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Patent #:
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Issue Dt:
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04/22/1997
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Application #:
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08062595
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Filing Dt:
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05/17/1993
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Title:
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TELEPHONE HEADSET INTERFACE CIRCUIT
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Patent #:
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Issue Dt:
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08/06/1996
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Application #:
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08288941
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Filing Dt:
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08/10/1994
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Title:
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TELEPHONE HEADSET INTERFACE CIRCUIT
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Patent #:
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Issue Dt:
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11/02/1999
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Application #:
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08968307
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Filing Dt:
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11/12/1997
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Title:
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CIRCUITRY FOR IMPROVING PERFORMANCE OF ELECTRET MICROPHONE
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Patent #:
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Issue Dt:
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01/07/2003
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Application #:
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09115980
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Filing Dt:
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07/15/1998
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Title:
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AMPLIFIER CIRCUIT FOR ELECTRET MICROPHONE WITH ENHANCED PERFORMANCE
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Patent #:
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Issue Dt:
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10/24/2000
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Application #:
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09130745
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Filing Dt:
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08/07/1998
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Title:
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COMPUTER TELEPHONY HEADSET AMPLIFIER
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Patent #:
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Issue Dt:
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01/20/2004
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Application #:
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09289366
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Filing Dt:
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04/09/1999
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Title:
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MICROPHONE CIRCUIT WITH MUTE AND KEEP ALIVE FUNCTION
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Patent #:
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Issue Dt:
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06/17/2003
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Application #:
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09335789
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Filing Dt:
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06/18/1999
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Title:
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AMPLIFIER CIRCUIT FOR ELECTRET MICROPHONE WITH ENHANCED PERFORMANCE
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Patent #:
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Issue Dt:
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05/04/2004
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Application #:
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09634073
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Filing Dt:
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08/08/2000
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Title:
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APPARATUS FOR CORDLESS COMPUTER TELEPHONY
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Patent #:
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Issue Dt:
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03/06/2007
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Application #:
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10793245
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Filing Dt:
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03/04/2004
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Title:
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APPARATUS FOR CORD-FREE HANDS-FREE TELEPHONY
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Patent #:
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Issue Dt:
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07/09/1996
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Application #:
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29040831
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Filing Dt:
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06/28/1995
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Title:
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COMBINED PORTABLE AUDIO MESSAGE RECORDING AND PLAYBACK STATION
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Patent #:
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Issue Dt:
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04/07/1998
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Application #:
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29055081
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Filing Dt:
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05/29/1996
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Title:
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PORTABLE INFORMATION STORING AND RETRIEVING DEVICE
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Patent #:
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Issue Dt:
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03/30/1999
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Application #:
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29075014
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Filing Dt:
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08/11/1997
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Title:
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PORTABLE VOICE RECORDER
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Patent #:
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Issue Dt:
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02/23/1999
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Application #:
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29075015
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Filing Dt:
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08/11/1997
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Title:
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PORTABLE VOICE RECORDER
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