Joseph C. Lai

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Metuchen, NJ, US

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Patents Grantslast 30 patents

Information Patent Grant
System and method for preventing fraud upon PBX through a remote ma...
- Patent number 5,606,604
- Issue date Feb 25, 1997
- Lucent Technologies Inc.
- Roberta S. Rosenblatt
- H04 - ELECTRIC COMMUNICATION TECHNIQUE