Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7878306 | Elevator system without a moving counterweight | Mark S. Thompson, Richard L. Hollowell | 2011-02-01 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7878306 | Elevator system without a moving counterweight | Mark S. Thompson, Richard L. Hollowell | 2011-02-01 |