Inventor

KAMIGAKI MASAHARU

JP5 patents

Patents

5 patents

US4775840AOct 4, 1988

Noise removing circuit

IWATSU ELECTRIC CO LTD47 citations85

US4905258AFeb 27, 1990

Data circuit-terminating equipment

IWATSU ELECTRIC CO LTD7 citations71

US4658397AApr 14, 1987

Time division multiplex data transfer system and method for telephone switching or like applications

IWATSU ELECTRIC CO LTD18 citations70

US4726016AFeb 16, 1988

Conference system

IWATSU ELECTRIC CO LTD5 citations60

US5025441AJun 18, 1991

Key telephone system

IWATSU ELECTRIC CO LTD0 citations36