Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10647547 | Methods and apparatuses for applying a substrate onto an elevator sheave | Xiaoyuan Chang, David R. Torlai, Peter Keyo, Hong Yang | 2020-05-12 |
| 9701517 | Methods and apparatuses for applying a substrate onto an elevator sheave | Xiaoyuan Chang, David R. Torlai, Peter Keyo, Hong Yang | 2017-07-11 |
| 5030028 | Handrail drive wheel mount assembly | James A. Rivera | 1991-07-09 |