Inventor
MATSUMOTO MASATAKA
JP10 patents
⚠️ This page may combine multiple inventors who share the name “MATSUMOTO MASATAKA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CITIZEN WATCH CO LTD
9 patentsUS4430532AFeb 7, 1984
Electronic watch multi-curcuit pushbutton switch
CITIZEN WATCH CO LTD34 citations91
US4479724AOct 30, 1984
Water-resisting structure for a watch
CITIZEN WATCH CO LTD14 citations73
US4487513ADec 11, 1984
Watch case structure
CITIZEN WATCH CO LTD11 citations72
US4456388AJun 26, 1984
Watch case structure
CITIZEN WATCH CO LTD9 citations72
US4234947ANov 18, 1980
Solar battery powered timepiece
CITIZEN WATCH CO LTD15 citations72
US4785982ANov 22, 1988
Watch case and band attachment structure
CITIZEN WATCH CO LTD11 citations71
US4368369AJan 11, 1983
Electrical switch
CITIZEN WATCH CO LTD17 citations71
US4397568AAug 9, 1983
Timepiece push-button structure
CITIZEN WATCH CO LTD4 citations61
US4391534AJul 5, 1983
Glass mounting structure for watches
CITIZEN WATCH CO LTD3 citations61