Inventor

ANGELL ERIC H

US3 patents

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

AMERICAN TELEPHONE & TELEGRAPH

2 patents

US4716561ADec 29, 1987

Digital transmission including add/drop module

AMERICAN TELEPHONE & TELEGRAPH59 citations91

US4905228AFeb 27, 1990

Digital transmission channel framing

AMERICAN TELEPHONE & TELEGRAPH12 citations70

AT & T BELL LAB

1 patent

US4924459AMay 8, 1990

Digital transmission interconnect signal

AT & T BELL LAB15 citations70