Inventor

NAKAGAWA HISAHIDE

3 patents

Patents

3 patents

US4627739ADec 9, 1986

Bracelet type wrist watch

CITIZEN WATCH CO LTD54 citations91

US4223524ASep 23, 1980

Quartz oscillation circuit for electronic timepieces

CITIZEN WATCH CO LTD19 citations77

US4328570AMay 4, 1982

Electronic timepiece with illumination lamp battery voltage drop compensation circuit

CITIZEN WATCH CO LTD4 citations57