DS

David F. Schaefer

Caterpillar: 1 patents #189 of 710Top 30%
📍 Princeville, IL: #1 of 4 inventorsTop 25%
🗺 Illinois: #2,058 of 6,921 inventorsTop 30%
Overall (2011): #319,800 of 364,097Top 90%
1
Patents 2011

Issued Patents 2011

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
8070240 Sprocketed drive assembly for track-type machine Jianping Zheng, Daniel Marcel Désiré Angot, Selvaraj Kuppannan 2011-12-06