Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6203247 | Drilling vessel with moveable substructure | Herman J. Schellstede | 2001-03-20 |
| 5997217 | Shallow water well-drilling apparatus | — | 1999-12-07 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6203247 | Drilling vessel with moveable substructure | Herman J. Schellstede | 2001-03-20 |
| 5997217 | Shallow water well-drilling apparatus | — | 1999-12-07 |