DS

David R. Schwartau

📍 Red Wing, MN: #58 of 107 inventorsTop 55%
🗺 Minnesota: #32,449 of 52,454 inventorsTop 65%
Overall (All Time): #4,113,849 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4207837 Apparatus for a dairy barn Merle C. Schwartau, Daniel J. Schwartau 1980-06-17