Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6349813 | Escalator roller degradation monitor device | Kirk Von Offerman, Robert T. North, Melanie J. Smith, Roger Frazier, William G. Bonitz | 2002-02-26 |
| D383738 | Monitor | — | 1997-09-16 |
| D368899 | Monitor | — | 1996-04-16 |