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Willie C. Roberson

AG Abb Vetco Gray: 1 patents #67 of 165Top 45%
XA Xaloy: 1 patents #6 of 13Top 50%
📍 Blacksburg, VA: #390 of 1,029 inventorsTop 40%
🗺 Virginia: #12,642 of 34,511 inventorsTop 40%
Overall (All Time): #2,300,269 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5192051 Unidirectional seat seal for gate valve — 1993-03-09
5019459 High temperture corrosion resistant bimetallic cylinder Schiao F. Chou 1991-05-28