Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9708160 | Tensioning device and tensioning method for steel wire rope of cage guide of ultra-deep vertical shaft | Zhencai Zhu, Xiao Liang Chen, Guohua Cao, Hong-Jen Lai, Gang Shen +2 more | 2017-07-18 |