Inventor

SHIMATANI TOSHIMICHI

JP5 patents

Patents

5 patents

US4805165AFeb 14, 1989

Time division multiplex data transmission method and apparatus

IWATSU ELECTRIC CO LTD54 citations92

US4905258AFeb 27, 1990

Data circuit-terminating equipment

IWATSU ELECTRIC CO LTD7 citations71

US4815099AMar 21, 1989

Data circuit-terminating equipment

IWATSU ELECTRIC CO LTD7 citations71

US4694470ASep 15, 1987

Data transmission circuit

IWATSU ELECTRIC CO LTD3 citations60

US5025441AJun 18, 1991

Key telephone system

IWATSU ELECTRIC CO LTD0 citations36