Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9826863 | Motorized scrubbing system attachable to a wall surface | — | 2017-11-28 |
| 6241603 | Ventilation filter mechanism | — | 2001-06-05 |
| 5249883 | Metal plate/asphalt pavement | Dennis P. Foley, Reginald Frizzell, Dale Sieben, Ludovit Zanzotto | 1993-10-05 |