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Mamaru Watanabe

SISeiko Instruments: 2 patents #605 of 1,437Top 45%

Overall (All Time): #2,154,721 of 4,157,543Top 55%

2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
7254094	Timepiece with calendar mechanism containing 2 date indicators	—	2007-08-07
7180829	Timepiece equipped with calendar mechanism including first and second date indicators	—	2007-02-20