Inventor

KATO TOSHIKIYO

JP3 patents

Patents

3 patents

US4064689ADec 27, 1977

Electronic timepiece with electro-optical display

CITIZEN WATCH CO LTD23 citations79

US4960337AOct 2, 1990

Ribbon mask for a printer

CITIZEN WATCH CO LTD12 citations70

US4469449ASep 4, 1984

Drive system for electrochromic display cell

CITIZEN WATCH CO LTD7 citations68