RD

Rex E. Duhn

DT Duhn Oil Tool: 1 patents #1 of 4Top 25%
SP Shell Western E & P: 1 patents #1 of 4Top 25%
📍 Bakersfield, CA: #10 of 49 inventorsTop 25%
🗺 California: #3,049 of 13,957 inventorsTop 25%
Overall (1994): #79,602 of 165,921Top 50%
1
Patents 1994

Issued Patents 1994

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5303774 Ring seal packer Jay C. Duhn, Kenneth D. Webster, Aaron B. Speirs 1994-04-19