Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5887583 | Mass flow control system and method for asphalt plant | Bruce C. Irwin | 1999-03-30 |
| 5160259 | Draft control method and apparatus for material processing plants | John J. O'Hara, David R. Wolfe, Bruce C. Irwin | 1992-11-03 |
| 4341512 | Burner | Raymond J. Wojcieson, John J. O'Hara | 1982-07-27 |