Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4989839 | Automatic tuyere puncher | Dale Simms, Walter A. Dutton, Norman Seymour | 1991-02-05 |
| 4619533 | Tuyere pyrometer | John M. Lucas, Frank Kitzinger, Vladimir M. Labuc, John G. Peacey, Gregory A. Wint | 1986-10-28 |