Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6196494 | Expanding shaft | James Rollins | 2001-03-06 |
| 4251931 | Terrain vehicle simulator contour measuring and storage device | — | 1981-02-24 |
| 4227401 | Surface elevation measuring apparatus | — | 1980-10-14 |
| 4223454 | Marksmanship training system | Windell N. Mohon, Frank J. Oharek, Robert J. Entwistle, David T. Long, Don D. Doty | 1980-09-23 |
| 4206633 | Surface profile follower and indicator system | Paul D. Grimmer | 1980-06-10 |