Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4716965 | Installing casing with improved casing/cement bonding | Gerardus M. Bol, Fredericus C. Schouten, Robert B. Stewart, Petrus C. De Roo | 1988-01-05 |
| 4199858 | Method for automatically lubricating pipe joint | — | 1980-04-29 |