DL

Duane Lang

📍 Tyler, TX: #135 of 403 inventorsTop 35%
🗺 Texas: #52,441 of 125,132 inventorsTop 45%
Overall (All Time): #2,264,102 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5806589 Apparatus for stabbing and threading a drill pipe safety valve — 1998-09-15
5092399 Apparatus for stabbing and threading a drill pipe safety valve — 1992-03-03