Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12054362 | Crane counterweight block alignment detection and control method and device, and crane | Zhiren Tan, Qing Fan, Ling Fu, Yanbin Liu, Yang Zeng +3 more | 2024-08-06 |
| 5437353 | Magnetic adjustable braking device | — | 1995-08-01 |
| 5336143 | Mechanism of a stepping device | — | 1994-08-09 |
| 5230680 | Torque variable exercising apparatus | — | 1993-07-27 |
| 5194059 | Magnetically controlled exerciser for exercising arms | — | 1993-03-16 |