Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4512055 | Chimney cleaning apparatus with motor drive | Donald G. Coutts | 1985-04-23 |
| 4505000 | Chimney cleaning apparatus | Donald G. Coutts | 1985-03-19 |
| 4483038 | Motorized chimney cleaning apparatus | Donald G. Coutts | 1984-11-20 |