Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6431815 | Foldable retractable loading ramp assembly | James Zarzecki, Richard Roberts | 2002-08-13 |
| 5123409 | Emergency oxygen supply system | David P. Sheffield, Richard J. Boyles | 1992-06-23 |