William A. Sims

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Colorado Springs, CO, US

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Patents Grantslast 30 patents

Information Patent Grant
Method of setting up a conference call
- Patent number 6,236,644
- Issue date May 22, 2001
- MCI Communications Corporation
- Steven S. Shuman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method of and system for call routing compliant with international...
- Patent number 5,892,822
- Issue date Apr 6, 1999
- MCI Communications Corporation
- Louis G. Gottlieb
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and system for nationwide mobile telecommunications billing
- Patent number 5,873,030
- Issue date Feb 16, 1999
- MCI Communications Corporation
- Stephen W. Mechling
- H04 - ELECTRIC COMMUNICATION TECHNIQUE