Inventor
FREY ALAN E
US13 patents
⚠️ This page may combine multiple inventors who share the name “FREY ALAN E”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
AT & T BELL LAB
3 patentsAMERICAN TELEPHONE & TELEGRAPH
3 patentsUS4885738ADec 5, 1989
Method of and apparatus for establishing a wideband communication facility through a switched communications network having narrow bandwidth time division multiplexed channels
AMERICAN TELEPHONE & TELEGRAPH28 citations90
US4704716ANov 3, 1987
Method and apparatus for establishing a wideband communication facility through a communication network having narrow bandwidth channels
AMERICAN TELEPHONE & TELEGRAPH41 citations90
US4727577AFeb 23, 1988
Method of and apparatus for recording information on the accumulated usage of a trunk
AMERICAN TELEPHONE & TELEGRAPH22 citations75