Inventor

WALTER KEITH D

US3 patents

Patents

3 patents

US4597077AJun 24, 1986

Integrated voice/data/control switching system

CXC CORP166 citations96

US4587651AMay 6, 1986

Distributed variable bandwidth switch for voice, data, and image communications

CXC CORP224 citations96

US4679191AJul 7, 1987

Variable bandwidth switching system

CXC CORP207 citations95