Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7250735 | Driving circuit of a fan | Chih-Shih Yang | 2007-07-31 |
| 7019473 | Noiseless driving circuit for DC motor | Chih-Shih Yang | 2006-03-28 |
| D290755 | Mini fluorescent lantern | — | 1987-07-07 |
| D286681 | Torch | — | 1986-11-11 |
| D282584 | Fluorescent lantern | — | 1986-02-11 |
| D282583 | Torch | — | 1986-02-11 |
| D278936 | Torch | — | 1985-05-21 |
| 4472766 | Torch | — | 1984-09-18 |
| D270007 | Torch | — | 1983-08-02 |
| D268528 | Torch | — | 1983-04-05 |