JR

J. W. H. Van Rijzingen

VI Varco I/P: 1 patents #91 of 168Top 55%
📍 Oosterhout, NL: #45 of 117 inventorsTop 40%
Overall (All Time): #3,483,474 of 4,157,543Top 85%
1
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Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6758280 Non-seize material attachment for a drill slip system Rosmalen R. Roling, David Mason 2004-07-06