Hao; Ruixiang
Patent Applications and Registrations
Patent applications and USPTO patent grants for Hao; Ruixiang.The latest application filed is for "negative voltage backflow direct current supply system for rail transport".
- Hao; Ruixiang - Beijing CN
| Patent | Date |
|---|---|
| Negative voltage backflow direct current supply system for rail transport Grant 10,744,880 - Zheng , et al. A | 2020-08-18 |
| Negative Voltage Backflow Direct Current Supply System For Rail Transport App 20180208063 - Zheng; Qionglin ; et al. | 2018-07-26 |
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