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USPTO Patent Rankings Data through Sept 30, 2025
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Shigeji Shirai

Overall (All Time): #4,061,653 of 4,157,543Top 100%
1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4418499 Cutter grinding machine 1983-12-06