Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8084114 | Reinforced rampdown for composite structural member and method for same | Douglas L. Grose, Marc J. Piehl, Douglas A. Frisch, Joseph L. Sweetin | 2011-12-27 |
| 7531058 | Reinforced rampdown for composite structural member and method for same | Douglas L. Grose, Marc J. Piehl, Douglas A. Frisch, Joseph L. Sweetin | 2009-05-12 |