Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5508883 | Air mixer cool plate | Mohammed S. Shaikh | 1996-04-16 |
| 4714953 | Welded wire cooling | Marvin L. Buller, Douglas W. Phelps, Jr., Sigvart J. Samuelsen, William Ward | 1987-12-22 |
| 4417120 | Percussive arc welding | Douglas W. Phelps, Jr., Sigvart J. Samuelsen, William Ward | 1983-11-22 |