TB

Trygve Berthelsen

SI Smith International: 1 patents #390 of 708Top 60%
📍 Sola, NO: #61 of 127 inventorsTop 50%
Overall (All Time): #3,296,711 of 4,157,543Top 80%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
7762330 Methods of making multiple casing cuts James E. Saylor, III, Thomas D. Helbert, Marc Henderson, Joeseph V. Hebert, Randall L. Hebert +4 more 2010-07-27