Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6082499 | Wrap-around elevator door | — | 2000-07-04 |
| 6032762 | Door operator for elevators having curved doors | Hai T. Nguyen | 2000-03-07 |
| 5899302 | Elevator door interlock | — | 1999-05-04 |
| 5878846 | Light duty elevator door operator | — | 1999-03-09 |
| 5476633 | Ultrahigh-purity dimensionally stable INVAR 36 | Witold Sokolowski, Marc S. Lane, Cheng-Hsian Hsieh | 1995-12-19 |