Issued Patents 2020
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10526168 | Service alarm device for warning if an elevator safety device is not activated | Kenneth P. Litteral | 2020-01-07 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10526168 | Service alarm device for warning if an elevator safety device is not activated | Kenneth P. Litteral | 2020-01-07 |