BG

Brad D. Grothen

RI Robbins Industries: 1 patents #23 of 50Top 50%
Overall (All Time): #3,116,350 of 4,157,543Top 75%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
8783786 Cutter assembly for tunnel boring machine with pressure compensation Aaron J. Shanahan, Stephen M. Smading, Timothy A. Lang, Zachary J. Box, Brian B. Khalighi +3 more 2014-07-22