Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5297187 | Pressure vessel penetration sealing device | Jan H. Sodergren | 1994-03-22 |
| 4524729 | Primary manway closure redundant restraint | Frank P. Hill, Jr., John W. Alden | 1985-06-25 |
| 4397503 | Auriferous gravel interceptor | — | 1983-08-09 |