RM

Ryoji Matsumaru

TC Tombow Pencil Co.: 1 patents #17 of 53Top 35%
📍 Kashiwa, JP: #407 of 653 inventorsTop 65%
Overall (All Time): #3,727,523 of 4,157,543Top 90%
1
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5679156 Character eraser case — 1997-10-21