William K. McCormick

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Chester, NJ, US

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Patents Grantslast 30 patents

Information Patent Grant
Automation of telephone operator assistance calls
- Patent number 5,185,781
- Issue date Feb 9, 1993
- AT&T Bell Laboratories
- Douglas C. Dowden
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Automation of telephone operator assistance calls
- Patent number 5,181,237
- Issue date Jan 19, 1993
- AT&T Bell Laboratories
- Douglas C. Dowden
- H04 - ELECTRIC COMMUNICATION TECHNIQUE