Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5555598 | Cleaning tool head with overlapping and offset fluid spray patterns | Sung Kil CHO | 1996-09-17 |
| 4720889 | Perimeter seal structure for a cleaning head | — | 1988-01-26 |
| 4696075 | Filter structure | — | 1987-09-29 |
| 4654925 | Nozzle structure for a surface covering cleaning machine | — | 1987-04-07 |
| 4649594 | Cleaning head for smooth and napped surface covering materials | — | 1987-03-17 |
| 4488330 | Rug and upholstery cleaning apparatus | — | 1984-12-18 |
| 4466155 | Recycling cleaning apparatus | — | 1984-08-21 |