Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5636786 | High efficiency gas furnace | William E. Kraemer | 1997-06-10 |
| 5472141 | High efficiency gas furnace | William E. Kraemer | 1995-12-05 |
| 5398668 | Deep frying apparatus | William E. Kraemer | 1995-03-21 |
| 5364080 | High efficient heat treating and drying apparatus and method | William E. Kraemer | 1994-11-15 |
| 5282457 | High efficiency gas furnace | William E. Kraemer | 1994-02-01 |
| 5209218 | Deep frying apparatus | William E. Kraemer | 1993-05-11 |