Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4462794 | Method of operating a rotary calciner retrofitted to coal-firing | Henry A. Pfeffer | 1984-07-31 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4462794 | Method of operating a rotary calciner retrofitted to coal-firing | Henry A. Pfeffer | 1984-07-31 |