Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861962 | Nozzle shield for a plasma arc torch | Nicholas A. Sanders | 1989-08-29 |
| 4816637 | Underwater and above-water plasma arc cutting torch and method | Nicholas A. Sanders | 1989-03-28 |