Issued Patents 2022
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11505425 | Wireless signal device, system and method for elevator service request | Hui Chen, Shenhong Wang, Siqi Ma | 2022-11-22 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11505425 | Wireless signal device, system and method for elevator service request | Hui Chen, Shenhong Wang, Siqi Ma | 2022-11-22 |