Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7275622 | Traction elevator back-up power system with inverter timing | James C. Hall | 2007-10-02 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7275622 | Traction elevator back-up power system with inverter timing | James C. Hall | 2007-10-02 |