EK

Edwin R. Knerr

NL National Oilwell (U.K.) Limited: 1 patents #1 of 3Top 35%
📍 Houston, TX: #210 of 924 inventorsTop 25%
🗺 Texas: #885 of 4,134 inventorsTop 25%
Overall (1989): #117,987 of 140,708Top 85%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4852611 Wellhead connection of hydraulic control lines Robert E. Hart, William S. Cowan 1989-08-01