Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5117604 | Refractory brick wall system | Robert J. Pena, Kenneth L. Farrell, Steven V. Egert | 1992-06-02 |
| 4977838 | Modular door jamb and lintel system for industrial furnaces | Kenneth L. Farrell, John A. Cona, Ronald Glugla | 1990-12-18 |
| 4481024 | Heat recovery system for glass tank furnaces | — | 1984-11-06 |