Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4285718 | Method of operating tubular heat exchanger for preheating pulverous glass batch | Richard G. Mathias, John D. Novak, Robert R. Rough, Sr., Sigmund Willinger | 1981-08-25 |