JB

Johannes W. H. Van Den Bergh

📍 Bergen, NL: #18 of 38 inventorsTop 50%
Overall (All Time): #3,780,598 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5452772 Apparatus for steering the foremost part of the drillpipe — 1995-09-26