Dennis J. O'Brien

Follow

Person

West Linn, OR, US

People

Patents Grantslast 30 patents

Information Patent Grant
Group message delivery in a time-division multiplexed paging system
- Patent number 5,481,254
- Issue date Jan 2, 1996
- Seiko Communications Holding N.V.
- Garold B. Gaskill
- G08 - SIGNALLING
Information Patent Grant
Voice mail system with improved detection and cancellation
- Patent number 4,885,763
- Issue date Dec 5, 1989
- AT&E Corporation
- Dennis J. O'Brien
- H04 - ELECTRIC COMMUNICATION TECHNIQUE