Dennis Maddox

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Rustburg, VA, US

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Patents Grantslast 30 patents

Information Patent Grant
Secure transmission system for a digital trunked radio system
- Patent number 7,697,689
- Issue date Apr 13, 2010
- Pine Valley Investments, Inc.
- James F. Collum
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Secure transmission system for a digital trunked radio system
- Patent number 7,203,318
- Issue date Apr 10, 2007
- M/A-Com Private Radio Systems, Inc.
- James F. Collum
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Multisite trunked RF communication system with reliable control mes...
- Patent number 5,365,512
- Issue date Nov 15, 1994
- Ericsson GE Mobile Communications Inc.
- Edward A. Combs
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Secure transmission system for a digital trunked radio system
- Publication number 20070160214
- Publication date Jul 12, 2007
- James F. Collum
- H04 - ELECTRIC COMMUNICATION TECHNIQUE