Inventor

TSUKIYAMA SATORU

JP3 patents

Patents

3 patents

USD285069SAug 12, 1986

Telephone unit

IWATSU ELECTRIC CO LTD12 citations69

USD277281SJan 22, 1985

Mobile telephone unit

IWATSU ELECTRIC CO LTD8 citations69

US4144413AMar 13, 1979

Rotary telephone dial

IWATSU ELECTRIC CO LTD0 citations47