Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5701632 | Debris blowing apparatus | John Sadler | 1997-12-30 |
| 5673457 | Debris blower and/or vacuum devices | John Sadler | 1997-10-07 |
| 5659920 | Blower vacuum device of improved design | John Sadler | 1997-08-26 |
| 5604954 | Blower-vacuum device | John Sadler | 1997-02-25 |