DR

Diane Ryan

BW Brush Wellman: 2 patents #17 of 51Top 35%
Overall (All Time): #2,199,435 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6527512 Mud motor Robert Bertin, William D. Nielsen 2003-03-04
6371224 Threaded spacer Stephen E. Freeman, David J. Krus, Donald J. Moracz, William D. Nielsen 2002-04-16