Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6231126 | Structure for fastening a support shaft to a seat of a chair | — | 2001-05-15 |
| D416687 | Cleaning brush | — | 1999-11-23 |
| D410789 | Brush | — | 1999-06-08 |
| 4571837 | Ellipsograph | Lung-Chiao Chou | 1986-02-25 |