Inventor

MARKS JOEL M

US2 patents

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

AT & T BELL LAB

1 patent

US5109408AApr 28, 1992

Arrangement for intentionally blocking telephone calls to predefined destination numbers but allowing such blocking to be selectively overridden

AT & T BELL LAB81 citations91

LUCENT TECHNOLOGIES INC

1 patent

US5640319AJun 17, 1997

Switch control methods and apparatus

LUCENT TECHNOLOGIES INC63 citations89