Issued Patents 2003
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6571421 | Vacuum cleaner and steamer apparatus | John C. K. Sham | 2003-06-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6571421 | Vacuum cleaner and steamer apparatus | John C. K. Sham | 2003-06-03 |