Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8657275 | Material-saving and energy-saving multifunctional bench clamp | Chaolai Fan | 2014-02-25 |
| 5970812 | Quickly movable elastically engaging screw-and-nut mechanism | Chaolai Fan | 1999-10-26 |
| 5282392 | Synchro-clutching screw-and-nut mechanism | Chaolai Fan, Mengqing Fan | 1994-02-01 |