Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6145149 | Automatic floor washing apparatus | — | 2000-11-14 |
| 5650702 | Controlling system for self-propelled floor cleaning vehicles | — | 1997-07-22 |
| 5622236 | Guidance system for self-advancing vehicle | Mitsuo Sado | 1997-04-22 |