Inventor

KEEN DONALD M

US4 patents

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

AT & T CORP

2 patents

US5526422AJun 11, 1996

System and method for cleaning the display screen of a touch screen device

AT & T CORP245 citations95

US5388153AFeb 7, 1995

Apparatus and method for detecting telephone line status

AT & T CORP15 citations68

LUCENT TECHNOLOGIES INC

2 patents

US5638438AJun 10, 1997

System and method for automatically creating new pages in a touch screen based telephony product having a hierarchical repertory

LUCENT TECHNOLOGIES INC87 citations93

US5625375AApr 29, 1997

Method and apparatus for a multiple font display

LUCENT TECHNOLOGIES INC13 citations70