Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4784240 | Method for using door cycle time in dispatching elevator cars | Robert C. MacDonald, Gerald M. Rees, Elsa Abrego, Matthew Martin, Marjorie J. Polis +1 more | 1988-11-15 |