DS

David D. Schumacher

FH Fsi Holdings: 3 patents #2 of 21Top 10%
📍 Plymouth, MN: #614 of 1,545 inventorsTop 40%
🗺 Minnesota: #19,064 of 52,454 inventorsTop 40%
Overall (All Time): #1,669,612 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4801335 Rinsing in acid processing of substrates Don C. Burkman, Charlie A. Peterson 1989-01-31
4682615 Rinsing in acid processing of substrates Don C. Burkman, Charlie A. Peterson 1987-07-28
4595222 Carrier handle 1986-06-17