RC

Robert I. Clarkson

📍 Tulsa, OK: #27 of 151 inventorsTop 20%
🗺 Oklahoma: #151 of 749 inventorsTop 25%
Overall (1989): #64,137 of 140,708Top 50%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4842014 Check valve hanger mechanism John L. Strelow 1989-06-27