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Total properties:
20
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Patent #:
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|
Issue Dt:
|
06/09/1981
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Application #:
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06001949
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Filing Dt:
|
01/08/1979
|
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Title:
|
ACOUSTIC TRANSDUCER OF IMPROVED CONSTRUCTION
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|
|
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Patent #:
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|
Issue Dt:
|
05/29/1984
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Application #:
|
06414659
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Filing Dt:
|
09/03/1982
|
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Title:
|
MICROPHONE WITH STEPPED RESPONSE
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|
|
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Patent #:
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|
Issue Dt:
|
05/27/1986
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Application #:
|
06559386
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Filing Dt:
|
12/08/1983
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Title:
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CLASS D HEARING AID AMPLIFIER
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|
|
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Patent #:
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|
Issue Dt:
|
08/25/1987
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Application #:
|
06839876
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Filing Dt:
|
03/19/1986
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Title:
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CLASS D. HEARING AID AMPLIFIER
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Patent #:
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|
Issue Dt:
|
02/28/1989
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Application #:
|
07118455
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Filing Dt:
|
11/09/1987
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Title:
|
PASSIVE EAR PROTECTOR
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|
|
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Patent #:
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|
Issue Dt:
|
03/28/1989
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Application #:
|
07128736
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Filing Dt:
|
12/04/1987
|
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Title:
|
MICROPHONE WITH FREQUENCY PRE-EMPHASIS
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|
|
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Patent #:
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Issue Dt:
|
10/15/1991
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Application #:
|
07482265
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Filing Dt:
|
02/16/1990
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Title:
|
ACOUSTIC TRANSDUCER WITH IMPROVED ELECTRODE SPACING
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|
|
|
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Patent #:
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|
Issue Dt:
|
03/09/1993
|
Application #:
|
07759480
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Filing Dt:
|
09/13/1991
|
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Title:
|
HEARING AID OUTPUT TRANSDUCER WITH SELF CONTAINED AMPLIFIER
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|
|
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Patent #:
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|
Issue Dt:
|
06/22/1993
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Application #:
|
07900662
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Filing Dt:
|
06/19/1992
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Title:
|
WATER-RESISTANT TRANSDUCER HOUSING WITH HYDROPHOBIC VENT
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|
|
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Patent #:
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Issue Dt:
|
04/18/1995
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Application #:
|
07930006
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Filing Dt:
|
08/13/1992
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Title:
|
ELECTRET MICROPHONE ASSEMBLY, AND METHOD OF MANUFACTURER
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|
|
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Patent #:
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|
Issue Dt:
|
06/07/1994
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Application #:
|
07959710
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Filing Dt:
|
10/13/1992
|
|
Title:
|
HEARING AID MICROPHONE WITH MODIFIED HIGH-FREQUENCY RESPONSE
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|
|
|
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Patent #:
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|
Issue Dt:
|
08/20/1996
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Application #:
|
08254583
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Filing Dt:
|
06/06/1994
|
|
Title:
|
ACOUSTIC TRANSDUCER
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|
|
|
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Patent #:
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|
Issue Dt:
|
11/25/1997
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Application #:
|
08431763
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Filing Dt:
|
05/01/1995
|
|
Title:
|
UNIDIRECTIONAL MICROPHONE
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|
|
|
|
Patent #:
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|
Issue Dt:
|
11/17/1998
|
Application #:
|
08493197
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Filing Dt:
|
06/20/1995
|
|
Title:
|
MATERIALS AND METHODS FOR DETECTION OF OXALATE
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|
|
|
|
Patent #:
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|
Issue Dt:
|
03/21/2000
|
Application #:
|
08890075
|
Filing Dt:
|
07/09/1997
|
|
Title:
|
SHOCK RESISTANT ELECTROACOUSTIC TRANSDUCER
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|
|
|
|
Patent #:
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|
Issue Dt:
|
11/25/2003
|
Application #:
|
08943669
|
Filing Dt:
|
10/15/1997
|
|
Title:
|
RECEIVER AND METHOD OF CONSTRUCTION
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|
|
|
|
Patent #:
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|
Issue Dt:
|
08/01/1995
|
Application #:
|
29012486
|
Filing Dt:
|
09/01/1993
|
|
Title:
|
HEARING AID RECEIVER
|
|
|
|
|
Patent #:
|
|
Issue Dt:
|
07/25/1995
|
Application #:
|
29012487
|
Filing Dt:
|
09/01/1993
|
|
Title:
|
HEARING AID RECEIVER
|
|
|
|
|
Patent #:
|
|
Issue Dt:
|
08/01/1995
|
Application #:
|
29012488
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Filing Dt:
|
09/01/1993
|
|
Title:
|
HEARING AID RECEIVER
|
|
|
|
|
Patent #:
|
|
Issue Dt:
|
09/28/1999
|
Application #:
|
29083343
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Filing Dt:
|
02/06/1998
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|
Title:
|
MICROPHONE HOUSING
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