Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11364529 | Variable-diameter full-support mandrel structure with slider-type cross section for preventing reverse rotation of ratchet wheel | Shuyou Zhang, Zili Wang, Guodong Yi | 2022-06-21 |
| 11331709 | Elastic double-support variable-diameter mandrel for bending of aircraft engine-specific metal conduit | Shuyou Zhang, Zili Wang, Guodong Yi | 2022-05-17 |