Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10077657 | Compound-type tunneling shield | Yulian He | 2018-09-18 |
| 9995086 | Center-pillared full-face shaft drilling machine | Hua Zhao, Kleuters Nikolaus, Ningchuan Zhang, Wei Xiao, Xingjian Zhuo +4 more | 2018-06-12 |