Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6499914 | Movable self-elevating artificial work island with modular hull | Herman J. Schellstede | 2002-12-31 |
| 6443659 | Movable self-elevating artificial work island with modular hull | — | 2002-09-03 |
| 5136960 | Method and apparatus for reducing the draft and increasing the load bearing area and stability of marine drilling barges | — | 1992-08-11 |