Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D320848 | Single baffle tile for fixed heater for oil refineries | Ronald L. Cutshall, Frank L. Groenewold | 1991-10-15 |
| D318527 | Double baffle tile for furnace for oil refineries | Frank L. Groenewold, Ronald L. Cutshall | 1991-07-23 |
| D318328 | Triple baffle tile for fixed heater for oil refineries | Ronald L. Cutshall, Frank L. Groenewold | 1991-07-16 |