Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6912753 | Manual floor sweeper | Chiu Fai Hui, Kevin Kam Hoi Ma | 2005-07-05 |
| 6314972 | Domestic steam cleaning appliance | — | 2001-11-13 |
| D424263 | Electric broom | Cesare Mario Canni Ferrari, Chung Chi Ping | 2000-05-02 |
| D406420 | Vacuum broom | — | 1999-03-02 |
| 5850669 | Vacuum cleaner head | Andreas Schupp | 1998-12-22 |
| 5839158 | Sweeping brooms | Andreas Schupp | 1998-11-24 |
| 5638575 | Vacuum cleaners | — | 1997-06-17 |