DD

Douglas W. DeGraaf

CI Chicago Bridge & Iron: 2 patents #25 of 129Top 20%
CS Chicago Bridge & Iron Technical Services: 1 patents #20 of 60Top 35%
📍 Addison, IL: #64 of 247 inventorsTop 30%
🗺 Illinois: #26,653 of 84,256 inventorsTop 35%
Overall (All Time): #1,661,406 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
5115219 Superconducting magnetic energy storage apparatus structural support system Gregory J. Withers, Stephen W. Meier, Robert J. Walter, Michael D. Child 1992-05-19
4318423 External flowline across a universal joint 1982-03-09
4193368 Offshore mooring system for vessel or ship William A. Tam 1980-03-18