Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10280748 | High-frequency vibrating transverse drum cutter head, and drum cutter machine and tunnel boring machine therewith | — | 2019-05-07 |
| 9670728 | Rotary impact drill and double-layer drilling rod mechanism | — | 2017-06-06 |
| 8813589 | Eccentric moment stepless adjustable vibrating mechanism | — | 2014-08-26 |
| 8690261 | Hydraulic resonant breaking hammer | — | 2014-04-08 |