DS

David F. Schaefer

Caterpillar: 3 patents #2,162 of 8,398Top 30%
Overall (All Time): #1,470,588 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
10351186 Undercarriage support for a track chain Luke B. Fischer 2019-07-16
8070240 Sprocketed drive assembly for track-type machine Jianping Zheng, Daniel Marcel Désiré Angot, Selvaraj Kuppannan 2011-12-06
7806209 Apparatus and method to reduce vibrations on a tracked work machine Michael R. Standish, James M. Hollister, Margaret M. Lamb, Roy L. Maguire, Thomas E. Oertley +1 more 2010-10-05