Issued Patents 2022
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11242074 | Opening and closing method and opening and closing mechanism of convertible movable top cover of railway freight wagon | — | 2022-02-08 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11242074 | Opening and closing method and opening and closing mechanism of convertible movable top cover of railway freight wagon | — | 2022-02-08 |