Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5361887 | Apparatus for detecting an irregularity in the frequency of steps passing a particular point within a passenger conveying device | Arthur McClement | 1994-11-08 |
| 5316121 | Escalator missing step detection | Gerald E. Johnson | 1994-05-31 |
| 5295567 | System for emergency stopping of escalator handrail | Gerald E. Johnson | 1994-03-22 |