P

Inventor

PIERETH RICHARD J

US5 patents
⚠️ This page may combine multiple inventors who share the name “PIERETH RICHARD J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

AT & T BELL LAB

3 patents
US5181237AJan 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

AMERICAN TELEPHONE & TELEGRAPH

2 patents
US4899375AFeb 6, 1990

More efficient call handling for operator assistance calls

AMERICAN TELEPHONE & TELEGRAPH85 citations92
US4677609AJun 30, 1987

Semi-automated directory assistance systems

AMERICAN TELEPHONE & TELEGRAPH41 citations91