Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4663512 | Plasma-arc torch interlock with pressure sensing | Bruce O. Hatch, Richard A. Spaulding | 1987-05-05 |
| 4663515 | Plasma-arc torch interlock with flow sensing | Bruce O. Hatch, Richard A. Spaulding | 1987-05-05 |
| 4305257 | In-line slush making process | — | 1981-12-15 |