Inventor
DUNN ROBERT T
US4 patents
⚠️ This page may combine multiple inventors who share the name “DUNN ROBERT T”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ASTECH INC
3 patentsUS4495386AJan 22, 1985
Telephone extension system utilizing power line carrier signals
ASTECH INC115 citations94
US4479033AOct 23, 1984
Telephone extension system utilizing power line carrier signals
ASTECH INC125 citations94
US4058678ANov 15, 1977
Remote signalling to a telephone line utilizing power line carrier signals
ASTECH INC107 citations93