Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5345923 | Commercial hot air impingement cooking apparatus | Clement J. Luebke, Gerald W. Sank | 1994-09-13 |
| 5172682 | Commercial hot air impingement cooking apparatus | Clement J. Luebke, Gerald W. Sank | 1992-12-22 |
| 5050578 | Commercial hot air impingement cooking apparatus | Clement J. Luebke, Gerald W. Sank | 1991-09-24 |
| 4972824 | Commercial hot air impingement cooking apparatus | Clement J. Luebke, Gerald W. Sank | 1990-11-27 |
| 4951645 | Stacked duel module commercial hot air impingement cooking oven | Clement J. Luebke, Gerald W. Sank | 1990-08-28 |
| 4898151 | High heating efficiency deep fat cooking frypot | Clement J. Luebke, Gerald W. Sank, James T. Grob, George M. Price, Elbert M. Hubbard | 1990-02-06 |