Inventor
MATSUFUJI TERUO
JP7 patents
⚠️ This page may combine multiple inventors who share the name “MATSUFUJI TERUO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
IWATSU ELECTRIC CO LTD
6 patentsUS4763354AAug 9, 1988
Key telephone system
IWATSU ELECTRIC CO LTD25 citations91
US4380690AApr 19, 1983
Hybrid circuit
IWATSU ELECTRIC CO LTD15 citations71
US4782514ANov 1, 1988
Key telephone system
IWATSU ELECTRIC CO LTD9 citations69
US4502139AFeb 26, 1985
Howler tone sending-out system in time-division electronic exchanges
IWATSU ELECTRIC CO LTD4 citations60
US4592046AMay 27, 1986
Subscriber's circuit for time division switching system
IWATSU ELECTRIC CO LTD3 citations59
US4763348AAug 9, 1988
Controlled power supply for key telephone system
IWATSU ELECTRIC CO LTD3 citations56