Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4716965 | Installing casing with improved casing/cement bonding | Gerardus M. Bol, Franciscus H. Meijs, Fredericus C. Schouten, Robert B. Stewart | 1988-01-05 |
PR
Petrus C. De Roo
Overall (All Time): #3,944,490 of 4,157,543Top 95%
1
Patents All Time