Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8312587 | Self-rotating mop | — | 2012-11-20 |
| 7887470 | Multi purpose exerciser | — | 2011-02-15 |
| D623243 | Exercising hoop | Chang-Feng Lin | 2010-09-07 |
| 7758480 | Exercise hoop | Chang-Feng Lin | 2010-07-20 |
| 7744510 | Waist exercising device | Chang-Feng Lin | 2010-06-29 |
| 7651445 | Elliptical trainer | — | 2010-01-26 |