Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9383164 | Modular upper receiver and firearm with modular upper receiver | Kevin Langevin | 2016-07-05 |
| 9051044 | Counter-rotating open-rotor (CROR) | Paul A. Carvalho, David R. Danielson, Robert H. Perkinson | 2015-06-09 |
| 9052150 | Firearm trigger mechanism, firearm and method of controlling a rate of the firearm | — | 2015-06-09 |
| 7845910 | Propeller blade retention system with tapered roller bearing cartridge assemblies | Paul A. Carvalho | 2010-12-07 |
| 6514044 | Offset crowned roller assembly for variable pitch propellers | Paul A. Carvalho | 2003-02-04 |