Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4664247 | Conveyor brake control | Joachim Wolf, Andrew P. Kruper, Frederick O. Johnson | 1987-05-12 |
| 4588065 | Escalator with controlled brake | Ernest F. Conroy, Jr., John G. Dorman | 1986-05-13 |