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A. Maynard Engebretson
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Ladue, MO, US
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last 30 patents
Information
Patent Grant
Adaptive gain and filtering circuit for a sound reproduction system
Patent number
5,724,433
Issue date
Mar 3, 1998
K/S HIMPP
A. Maynard Engebretson
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Adaptive gain and filtering circuit for a sound reproduction system
Patent number
5,706,352
Issue date
Jan 6, 1998
K/S HIMPP
A. Maynard Engebretson
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Electronic filters, hearing aids and methods
Patent number
5,475,759
Issue date
Dec 12, 1995
Central Institute for the Deaf
A. Maynard Engebretson
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Adaptive noise reduction circuit for a sound reproduction system
Patent number
5,412,735
Issue date
May 2, 1995
Central Institute for the Deaf
A. Maynard Engebretson
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information
Patent Grant
Electronic filters, signal conversion apparatus, hearing aids and m...
Patent number
5,357,251
Issue date
Oct 18, 1994
Central Institute for the Deaf
Robert E. Morley
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Electronic filters, repeated signal charge conversion apparatus, he...
Patent number
5,225,836
Issue date
Jul 6, 1993
Central Institute for the Deaf
Robert E. Morley
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Electronic filters, signal conversion apparatus, hearing aids and m...
Patent number
5,111,419
Issue date
May 5, 1992
Central Institute for the Deaf
Robert E. Morley
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Implantable hearing aid coupler device
Patent number
5,085,628
Issue date
Feb 4, 1992
Storz Instrument Company
A. Maynard Engebretson
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method of readout of implanted hearing aid device and apparatus the...
Patent number
5,024,224
Issue date
Jun 18, 1991
Storz Instrument Company
A. Maynard Engebretson
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Electronic filters, hearing aids and methods
Patent number
5,016,280
Issue date
May 14, 1991
Central Institute for the Deaf
A. Maynard Engebretson
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Implantable middle ear hearing aid system and acoustic coupler ther...
Patent number
4,988,333
Issue date
Jan 29, 1991
Storz Instrument Company
A. Maynard Engebretson
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Hearing aids, signal supplying apparatus, systems for compensating...
Patent number
4,548,082
Issue date
Oct 22, 1985
Central Institute for the Deaf
A. Maynard Engebretson
H04 - ELECTRIC COMMUNICATION TECHNIQUE