Donald R. White

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Beaverton, OR, US

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Patents Grantslast 30 patents

Information Patent Grant
Audio headset
- Patent number 7,072,476
- Issue date Jul 4, 2006
- Matech, Inc.
- Donald R. White
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Full duplex communication circuit with a transducer for simultaneou...
- Patent number 5,907,538
- Issue date May 25, 1999
- Donald R. White
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Audio headset
- Publication number 20040136543
- Publication date Jul 15, 2004
- Donald R. White
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Loopdown and looparound headsets
- Publication number 20020186858
- Publication date Dec 12, 2002
- Masahisa Masuda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE