Issued Patents 1997
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D382383 | Floor scrubber | Christopher M. Knowlton | 1997-08-12 |
| 5630246 | Floor cleaning apparatus with flap having wear indicator | Christopher M. Knowlton, Timothy A. Strickland | 1997-05-20 |
| 5628086 | Floor cleaning apparatus with squeegee mounting system | Christopher M. Knowlton | 1997-05-13 |
| 5611108 | Floor cleaning apparatus with slidable flap | Christopher M. Knowlton, Timothy A. Strickland | 1997-03-18 |
| 5608947 | Floor cleaning apparatus with pre-filter | Christopher M. Knowlton, Timothy A. Strickland | 1997-03-11 |