DH

David E. Havel

CC Columbia Steel Casting Co.: 1 patents #9 of 18Top 50%
📍 Canby, OR: #86 of 152 inventorsTop 60%
🗺 Oregon: #17,068 of 28,073 inventorsTop 65%
Overall (All Time): #3,075,540 of 4,157,543Top 75%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
9163378 Pin retainer for dragline pins Stephen P. Doan, Brian C. Matlock 2015-10-20