Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4702694 | Furnace with modular construction | Clyde R. Johnson, Gerald Katrencik | 1987-10-27 |
| 4437884 | Ore roasting with recycle of gases | Clyde R. Johnson, N. Henri Masarky | 1984-03-20 |