Charles Tsao

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Lake Mary, FL, US

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Patents Grantslast 30 patents

Information Patent Grant
Cellular-telephone central call-processing system utilizing object-...
- Patent number 5,995,831
- Issue date Nov 30, 1999
- Phoenix Wireless Group
- Philip Case Gulliford
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Cellular-telephone central call-processing system utilizing object-...
- Patent number 5,966,649
- Issue date Oct 12, 1999
- Phoenix Wireless, Inc.
- Philip Case Gulliford
- H04 - ELECTRIC COMMUNICATION TECHNIQUE