Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6572082 | Railway boxcar door operating unit | James Brosh, Brian Campbell, Richard R. Estep, Larry D. Marshal | 2003-06-03 |
| 4987935 | BI-directional tree saw | Sean P. Corcoran, Stanley E. Farmer, Emory D. Hungerford, Mark P. Mallory | 1991-01-29 |