Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5975806 | Elevating unit for use with jack-up rig | — | 1999-11-02 |
| 5797703 | Elevating unit for use with jack-up rig | — | 1998-08-25 |
| 5580189 | Jack-up rig crane | Ronald E. Sanders, Avis Bourg | 1996-12-03 |