Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5189277 | Modular, stackable plasma cutting apparatus | John Boisvert, Fred Rogers, Dennis J. Solley, David A. Tatham | 1993-02-23 |
| 4782210 | Ridged electrode | David Nelson, William Wakefield | 1988-11-01 |
| 4585921 | Torch operation interlock device | Bruce O. Hatch | 1986-04-29 |
| 4225769 | Plasma torch starting circuit | — | 1980-09-30 |