Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7816878 | Vehicle access control system | Keith Heigl | 2010-10-19 |
| 7798761 | Electronic control system and method for an auxiliary device interlock safety system | Keith Heigl, Donald S. Sturm | 2010-09-21 |
| 7530226 | Access method and apparatus that limit motion according to load and position | — | 2009-05-12 |
| 7419349 | Wheelchair access system with stacking platform | — | 2008-09-02 |
| 7413395 | Wheelchair access system with stacking platform | — | 2008-08-19 |
| 6837670 | Wheelchair access system with stacking platform | — | 2005-01-04 |
| 6825628 | Electronic controller for vehicular wheelchair access | Keith Heigl, Donald S. Sturm | 2004-11-30 |
| 6305897 | Multi-panel platform rollstops for wheelchair lift | Alfred L. Budd, Jacques M. Dulin, Russell G. Antrim | 2001-10-23 |
| 6178697 | Apparatus for mounting a sliding door to a vehicle having a slotted door track and an insert and release hole | Paul Crawford | 2001-01-30 |
| 6158173 | Method for mounting and dismounting a sliding van door in a slotted door track | Paul Crawford | 2000-12-12 |
| 5975830 | Under floor wheelchair lift | Russell G. Antrim | 1999-11-02 |
| 5261779 | Dual hydraulic, parallelogram arm wheelchair lift | — | 1993-11-16 |
| 5180275 | Rotary bus lift with power stowable platform | Edward A. Czech, Kevin L. Crawford | 1993-01-19 |
| 4749977 | Coil mounting arrangement and its method of manufacture | Robert E. Prouty | 1988-06-07 |
| D286765 | Electromagnetic relay housing | Robert E. Prouty | 1986-11-18 |
| 4467301 | Electric switch having enhanced fault current capability | — | 1984-08-21 |
| 4424501 | Electromagnetic contactor having improved contact structure | — | 1984-01-03 |
| 4423399 | Electromagnetic contactor | — | 1983-12-27 |