Issued Patents 2019
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10246297 | Rust removing device for elevator guide rail | YuHang Ou, ChunYan Yu, Jing Nie | 2019-04-02 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10246297 | Rust removing device for elevator guide rail | YuHang Ou, ChunYan Yu, Jing Nie | 2019-04-02 |