RH

Richard O. Haarstad

📍 New Brighton, MN: #276 of 414 inventorsTop 70%
🗺 Minnesota: #32,449 of 52,454 inventorsTop 65%
Overall (All Time): #4,009,383 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4496460 Secondary flow fluid filter Jerry Kammerer 1985-01-29