Inventor
MAKUTA SHUNICHI
JP3 patents
Patents
3 patentsUS6219302B1Apr 17, 2001
Time signal repeater and time correction system using the same
RHYTHM WATCH CO26 citations91
US4481852ANov 13, 1984
Sound generating circuit for timepiece
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US4526478AJul 2, 1985
Electronic sound generating circuit for generation bell toll
RHYTHM WATCH CO6 citations57