DS

Donald W. Schoen

DC Donaldson Company: 2 patents #2 of 18Top 15%
📍 Ramsey, MN: #1 of 4 inventorsTop 25%
🗺 Minnesota: #50 of 1,035 inventorsTop 5%
Overall (1982): #14,875 of 81,411Top 20%
2
Patents 1982

Issued Patents 1982

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4345923 Air purifier with hermetic sealing 1982-08-24
4322230 Unitized gas-particulate filter and housing Jerry John Klug 1982-03-30