DS

David J. Schaefer

📍 Yankton, SD: #4 of 12 inventorsTop 35%
🗺 South Dakota: #45 of 168 inventorsTop 30%
Overall (2011): #319,799 of 364,097Top 90%
1
Patents 2011

Issued Patents 2011

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
7967363 Rail car cover system Nathan P. Dimmer, Steven J. Knight, Jerry R. Dimmer, Michael P. Krajewski, Kevin J. Kleinsasser +1 more 2011-06-28