Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7614490 | Passenger conveyor handrail having a gripping surface with a generally circular cross-section | John M. Milton-Benoit, Mary Ann T. Valk, Bryan Robert Siewert, Andre Picker, Matthias Steffen +2 more | 2009-11-10 |
| 7562759 | Passenger conveyor handrail with sliding material on toothed driven surface | Changsheng Guo, Bernward Engelke, Detlev Lindemeier, John M. Milton-Benoit, Bryan Robert Siewert +5 more | 2009-07-21 |
| 5094335 | Step chain roller for curved escalator | Willy Adrian, Bernd David | 1992-03-10 |
| 5020654 | Curved escalator step chain turnaround zone | Frank Sansevero, James A. Rivera | 1991-06-04 |
| 4883160 | Curved escalator with fixed center constant radius path of travel | Frank Sansevero, James A. Rivera, Dat Nguyen, Peter Borchers | 1989-11-28 |