DAVID BARNARD

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MADISON, WI, US

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Patents Grantslast 30 patents

Information Patent Grant
Behind the ear hearing aid system
- Patent number 7,027,608
- Issue date Apr 11, 2006
- GN ReSound North America
- Robert J. Fretz
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Hearing aid tip
- Patent number D431294
- Issue date Sep 26, 2000
- ReSound Corporation
- David Barnard
- D24 - Medical and laboratory equipment

Patents Applicationslast 30 patents

Information Patent Application
BEHIND THE EAR HEARING AID SYSTEM
- Publication number 20030002700
- Publication date Jan 2, 2003
- ROBERT J. FRETZ
- H04 - ELECTRIC COMMUNICATION TECHNIQUE