Inventor

KASAMA NORIYUKI

3 patents

Patents

3 patents

US4272838AJun 9, 1981

Electronic watch module structure

CITIZEN WATCH CO LTD39 citations89

US3975896AAug 24, 1976

Switching device for electronic timepiece

CITIZEN WATCH CO LTD14 citations68

US4202166AMay 13, 1980

Solid state watch module construction

CITIZEN WATCH CO LTD4 citations60