David Zey

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Faquay-Varina, NC, US

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Patents Grantslast 30 patents

Information Patent Grant
System and method of manufacture for establishing local payphone ca...
- Patent number 7,274,785
- Issue date Sep 25, 2007
- MCI Communications Corporation
- David Zey
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and article of manufacture for establishing local payphone c...
- Patent number 6,718,029
- Issue date Apr 6, 2004
- MCI Communications Corporation
- David Zey
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Selecting IPX/IGX nodes in a multi-domain environment
- Patent number 6,693,876
- Issue date Feb 17, 2004
- WorldCom, Inc.
- David A. Zey
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and article of manufacture for communication to telecommunic...
- Patent number 6,073,164
- Issue date Jun 6, 2000
- MCI Communications Corporation
- David A. Zey
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System having user terminal connecting to a remote test system via...
- Patent number 5,796,953
- Issue date Aug 18, 1998
- MCI Communications Corporation
- David A. Zey
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for testing call paths over long distance carr...
- Patent number 5,479,473
- Issue date Dec 26, 1995
- MCI Communications Corporation
- David A. Zey
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
System and method of manufacture for establishing local payphone ca...
- Publication number 20040042608
- Publication date Mar 4, 2004
- MCI Communications Corporation
- David Zey
- H04 - ELECTRIC COMMUNICATION TECHNIQUE