HJ

Harry C. Champlin, Jr.

PI Posi-Seal International: 2 patents #5 of 9Top 60%
📍 Ashaway, RI: #10 of 20 inventorsTop 50%
🗺 Rhode Island: #2,419 of 6,211 inventorsTop 40%
Overall (All Time): #2,336,793 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4744572 All-metal, valve sealing mechanism Bahman Sahba, John M. Cory 1988-05-17
4306706 Cryogenic valve seal Ronald A. Olansen, John M. Cory 1981-12-22