RO

Ronald W. Van Oostrum

DN Dredging International N.V.: 1 patents #6 of 12Top 50%
📍 Zoetermeer, NL: #85 of 196 inventorsTop 45%
Overall (All Time): #3,652,338 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5915885 Method for vertical displacement of masses underneath the earth's surface Philip L. Hermans 1999-06-29