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William D. Riggs

NP North American Philips: 4 patents #76 of 645Top 15%
📍 Southington, CT: #86 of 315 inventorsTop 30%
🗺 Connecticut: #10,145 of 34,797 inventorsTop 30%
Overall (All Time): #1,295,190 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
5359288 Position detecting apparatus using variable magnetic field intensity Hermann Rosshirt 1994-10-25
5089730 Low noise DC electric motor Edward M. O'Connor 1992-02-18
D301574 Torque motor 1989-06-13
4311933 Brushless direct current motor Joseph J. Schegan 1982-01-19