Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4509448 | Quick disconnect/connect mooring method and apparatus for a turret moored drillship | Joseph T. Shelton | 1985-04-09 |
| 4265568 | Gravity base, jack-up platform - method and apparatus | Robert P. Herrmann, Donald R. Ray | 1981-05-05 |
| 4198179 | Production riser | Donald R. Ray, Riddle E. Steddum, Bruce L. Crager | 1980-04-15 |