Zoe S. Quan

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Chicago, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Data communication method and apparatus using multiple physical dat...
- Patent number 4,703,475
- Issue date Oct 27, 1987
- American Telephone and Telegraph Company AT&T Bell Laboratories
- Ellen E. Dretzka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Controlling multi-port hunt groups in a distributed control switchi...
- Patent number 4,689,815
- Issue date Aug 25, 1987
- American Telephone and Telegraph Company, AT&T Bell Laboratories
- Kalwant S. Grewal
- H04 - ELECTRIC COMMUNICATION TECHNIQUE