Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6054668 | Method and apparatus of projection welding | Samuel Lewis, Darin M. Gilbert | 2000-04-25 |
| 5744773 | Resistance heating process and apparatus | Frank Scott Mellen, Alfred R. Leger, Charles H. Gage | 1998-04-28 |