Thomas J. Sullivan

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Kirkwood, MO, US

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Patents Grantslast 30 patents

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