Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4835366 | Portable temperature controlled floating electric immersion heater for a livestock water tank | Donald B. Owen | 1989-05-30 |
| 4826262 | Electronic towel dispenser | Donald B. Owen | 1989-05-02 |