Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9746289 | Internally reinforced rolling door slat | Steven C. Hahn, Paul Lawrence | 2017-08-29 |
| 9689203 | Barrier opening system for emergency escape and rescue | Paul Lawrence, Steve S. Hahn | 2017-06-27 |