Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5957243 | Tandem sheave assembly, and method to install an elevator car having a tandem sheave | Donald C. Root | 1999-09-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5957243 | Tandem sheave assembly, and method to install an elevator car having a tandem sheave | Donald C. Root | 1999-09-28 |