Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6176115 | Fractured seal ring | Richard Gerard Van Ryper, Arnold Wayne Raymond, Christopher Scott Stenta | 2001-01-23 |
| 5988649 | Fractured seal ring | Richard Gerard Van Ryper, Arnold Wayne Raymond, Christopher Scott Stenta | 1999-11-23 |