Inventor
WAKI MASAHIKO
8 patents
Patents
8 patentsUS4313187AJan 26, 1982
Water resisting crown structure for electronic wristwatches
CITIZEN WATCH CO LTD36 citations90
US4234948ANov 18, 1980
Watchglass fixing structure
CITIZEN WATCH CO LTD22 citations79
US5215235AJun 1, 1993
Watch band
CITIZEN WATCH CO LTD11 citations73
US4496248AJan 29, 1985
Structure for a watch case made of cemented carbide
CITIZEN WATCH CO LTD15 citations72
US4391533AJul 5, 1983
Back cover fixing structure for wristwatch
CITIZEN WATCH CO LTD12 citations72
US4223527ASep 23, 1980
Retaining spring for a wristwatch case
CITIZEN WATCH CO LTD8 citations68
US4397568AAug 9, 1983
Timepiece push-button structure
CITIZEN WATCH CO LTD4 citations61
US4544288AOct 1, 1985
Impact dot printing head
CITIZEN WATCH CO LTD5 citations57