Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7937804 | Belt lifter mechanism for vacuum cleaner | Chris Charlton, Ng Wing Leung | 2011-05-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7937804 | Belt lifter mechanism for vacuum cleaner | Chris Charlton, Ng Wing Leung | 2011-05-10 |