Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D749930 | Handle for a door controller | Daniel A. Sanchez, David C. Griffis, Gary L. Takata | 2016-02-23 |
| 8991878 | Electric swing plug door operator with auxiliary door locking mechanism | Gregory S. Beck, Rodrigo E. Guajardo | 2015-03-31 |
| 8528961 | Electric swing plug door operator with auxiliary door locking mechanism | Gregory S. Beck, Rodrigo E. Guajardo | 2013-09-10 |
| 7320496 | Sealing arrangement for a transit vehicle | David C. Griffis, Wieslaw Tomczyk | 2008-01-22 |
| 7143546 | Sealing arrangement for a transit vehicle | David C. Griffis, Wieslaw Tomczyk | 2006-12-05 |
| 6167816 | Single screw bridgeplate | Evin Lavery | 2001-01-02 |
| 6139073 | Lock assembly | Steven Heffner | 2000-10-31 |
| 5775232 | Bridge plate for a mass transit vehicle | Alf Olsen | 1998-07-07 |
| 5332279 | Power door operator for multi-passenger mass transit vehicles | Michael O'Neill | 1994-07-26 |