Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10026323 | Unmanned aerial system position reporting system | Douglas V. Limbaugh, David H. Barnhard | 2018-07-17 |
| 9595198 | Unmanned aerial system position reporting system | Douglas V. Limbaugh, David H. Barnhard | 2017-03-14 |
| 9129520 | Unmanned aerial system position reporting system | Douglas V. Limbaugh, David H. Barnhard | 2015-09-08 |
| 8437956 | Unmanned aerial system position reporting system and related methods | Douglas V. Limbaugh, David H. Barnhard | 2013-05-07 |
| 8386175 | Unmanned aerial system position reporting system | Douglas V. Limbaugh, David H. Barnhard | 2013-02-26 |