Inventor
SEHGAL CHANDER S
US3 patents
Patents
3 patentsUS5181237AJan 19, 1993
Automation of telephone operator assistance calls
AT & T BELL LAB157 citations96
US5163083ANov 10, 1992
Automation of telephone operator assistance calls
AT & T BELL LAB237 citations96
US5185781AFeb 9, 1993
Automation of telephone operator assistance calls
AT & T BELL LAB149 citations95