Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6484125 | Service information derived from elevator operational parameters | Harry Huang, Juan A. Lence Barreiro, Ronald R. Pepin, Gary L. Freeland, Robert H. Mashiak | 2002-11-19 |
| 6439350 | Differentiating elevator car door and landing door operating problems | Juan A. Lence Barreiro, Jun Liu | 2002-08-27 |