SO

Shouichi Ohkawa

PL Pilot Ink Company, Limited: 1 patents #64 of 110Top 60%
Overall (All Time): #3,225,423 of 4,157,543Top 80%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
8282299 Friction body, writing instrument and writing instrument set Yoshihiro Ito, Katsuyuki Fujita 2012-10-09