Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8801333 | Ice worthy jack-up drilling unit with gas agitation and leg ice shields | Peter G. Noble, Randall S. Shafer, Dominique P. Berta | 2014-08-12 |
| 5472057 | Drilling with casing and retrievable bit-motor assembly | — | 1995-12-05 |