Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11077872 | Signal light assembly | — | 2021-08-03 |
| 11027759 | Spring-loaded gate retraction device to return a rail-road crossing gate arm | Zhenzhong Long | 2021-06-08 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11077872 | Signal light assembly | — | 2021-08-03 |
| 11027759 | Spring-loaded gate retraction device to return a rail-road crossing gate arm | Zhenzhong Long | 2021-06-08 |