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William S. Clapham

HPHydra Tools International Plc: 1 patents #1 of 2Top 50%
Hoyland, GB: #1 of 2 inventorsTop 50%
Overall (1994): #52,770 of 165,921Top 35%
1 Patents 1994

Issued Patents 1994

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5319855 Mineral cutter tip and pick Charles M. Beevers 1994-06-14

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