Inventor

GRIZMALA FREDRICK

US3 patents

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

AT & T BELL LAB

2 patents

US4947425AAug 7, 1990

Echo measurement arrangement

AT & T BELL LAB74 citations91

US5166954ANov 24, 1992

Adaptive system for measuring the broadband signal-to-noise ratio of a transmission channel

AT & T BELL LAB26 citations89

AT & T CORP

1 patent

US6067637AMay 23, 2000

Data reduction technique for rule based systems

AT & T CORP25 citations86