Issued Patents 2023
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11649137 | Elevator sound systems | Daryl J. Marvin | 2023-05-16 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11649137 | Elevator sound systems | Daryl J. Marvin | 2023-05-16 |