Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6371525 | Gas riser with free rotating plastic riser casing | Steven Passerell | 2002-04-16 |
| 6371531 | Stab-type coupling with collet having locking ribs and rotation prevention member | — | 2002-04-16 |