Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D700542 | Bus fascia | David C. Warren, Dan G. Allen, Bill Coryell, Laszlo Juhasz, Pal Habuda +4 more | 2014-03-04 |
| D670215 | Bus bumper | David C. Warren, Dan G. Allen, Bill Coryell, Laszlo Juhasz, Pal Habuda +4 more | 2012-11-06 |
| D664912 | Bus roof enclosure system | David C. Warren, Dan G. Allen, Bill Coryell, Laszlo Juhasz, Pal Habuda +1 more | 2012-08-07 |