Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6314761 | Forehearth feeder tube lift system | Frank J. DiFrank, D. Wayne Leidy | 2001-11-13 |
| 6151918 | Forehearth feeder tube lift system | Frank J. DiFrank, D. Wayne Leidy | 2000-11-28 |
| 6032550 | Right angle drive gearbox | — | 2000-03-07 |