Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4416696 | Method for heat treating cement clinker raw materials | Steven J. Zagar | 1983-11-22 |
| 4416697 | Method for preheating cement clinker raw materials | Steven J. Zagar | 1983-11-22 |
| 4270900 | Suspension preheater | Paul Hess | 1981-06-02 |