David A. Green

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Bartlett, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and system for testing subscriber circuits and wiring in a c...
- Patent number 5,917,885
- Issue date Jun 29, 1999
- Motorola, Inc.
- James J. Berken
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method of rekeying roaming communication units
- Patent number 5,471,532
- Issue date Nov 28, 1995
- Motorola, Inc.
- Kevin Gardeck
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method for over the air rekeying of multiple communication groups
- Patent number 5,381,479
- Issue date Jan 10, 1995
- Motorola, Inc.
- Kevin Gardeck
- H04 - ELECTRIC COMMUNICATION TECHNIQUE