Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9650820 | Structural arrangement in pneumatic floor spring | Maia Turibio Gurgel, Francisco Alan Freitas Marinho | 2017-05-16 |
| 8813313 | Spring-biased floor-mounted door hinge | Francisco Alan Freitas Marinho, Raimundo Raumiro Maia Da Silva | 2014-08-26 |