Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9784041 | Drilling rig riser identification apparatus | Leon Ellison, Rheinhold Kammann, Manfred Worms, Clive Lam, Guy L. McClung, III | 2017-10-10 |
| 7958715 | Chain with identification apparatus | Leon Ellison, Reinhold Kammann, Manfred Worms, Clive Lam, Guy L. McClung, III | 2011-06-14 |