Issued Patents 2003
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6622741 | Automatic bending-angle changing structure for umbrella | — | 2003-09-23 |
| 6600128 | Fire alarm device for laser cutting/engraving machine | — | 2003-07-29 |
| 6587356 | Start-up circuit and control for high power isolated boost DC/DC converters | Lizhi Zhu, Fred C. Lee | 2003-07-01 |
| 6580445 | Printing head structure of large-size drafting machine | — | 2003-06-17 |
| 6539629 | Roller shaft on computer character-cutting device and method to manufacture the same | — | 2003-04-01 |