Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9841145 | Axial piercing mechanism for pressurized gas canister | David James Powell, Earl Mark, Taylor Durrance | 2017-12-12 |
| 9612085 | Payload launch system and method | David James Powell, Earl Mark, Taylor Durrance, Tanner Sizemore, Charles M. Nowell | 2017-04-04 |
| 8662441 | Unmanned aerial vehicle launch system | David James Powell, Earl Mark, John T. Houck | 2014-03-04 |
| 5446995 | Modular drainage system for containers | — | 1995-09-05 |