Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5782200 | Poultry feeder | James Knowles, Larry M. Knowles, Marvin E. Knowles | 1998-07-21 |
| 5535944 | Combined heat and power system | — | 1996-07-16 |
| 5498205 | Roof ventilator | James Knowles, Larry M. Knowles | 1996-03-12 |