Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4703325 | Remote subsystem | Frederick C. Chamberlin, Peter D. Carter, Charles S. Wilson | 1987-10-27 |
| 4623040 | Method and apparatus for reducing elevator service calls | Robert E. Hall | 1986-11-18 |
| 4622538 | Remote monitoring system state machine and method | Robert E. Hall | 1986-11-11 |
| 4568909 | Remote elevator monitoring system | — | 1986-02-04 |