Issued Patents 2020
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10875743 | Rope-climbing self propelled elevator system | Richard L. Hollowell | 2020-12-29 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10875743 | Rope-climbing self propelled elevator system | Richard L. Hollowell | 2020-12-29 |