Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8657275 | Material-saving and energy-saving multifunctional bench clamp | Yongjie Fan | 2014-02-25 |
| 5970812 | Quickly movable elastically engaging screw-and-nut mechanism | Yongjie Fan | 1999-10-26 |
| 5282392 | Synchro-clutching screw-and-nut mechanism | Yongjie Fan, Mengqing Fan | 1994-02-01 |
| 4923185 | Vertical-lift screw drive mechanism | — | 1990-05-08 |
| 4834355 | Mechanical program-controlled fast range-adjusting device | — | 1989-05-30 |