Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6543583 | Elevator auditing with recommended action, reason and severity in maintenance messages | Chouhwan Moon | 2003-04-08 |
| 6516923 | Elevator auditing and maintenance | Chouhwan Moon | 2003-02-11 |