Michael P. O'Connell

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Somerville, MA, US

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Patents Grantslast 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
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, 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