Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4812610 | Adaptor for converting oxy-fuel cutting torches to exothermic cutting | — | 1989-03-14 |
| 4797528 | Vacuum carbon arc metal removal process and apparatus | Jeffrey S. Henderson, Lawrence R. Soisson, Andrew Joseph Toth | 1989-01-10 |