FT

Frederick N. Trofimenkoff

WE Weatherford/Lamb: 1 patents #47 of 159Top 30%
📍 Calgary, CA: #45 of 274 inventorsTop 20%
Overall (2004): #222,896 of 270,089Top 85%
1
Patents 2004

Issued Patents 2004

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6672383 Subsurface signal transmitting apparatus Marvin L. Holbert, James W. Haslett, Robert E. Smallwood 2004-01-06