Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9938827 | End plate interlock for housing of a ground breaking machine and method of mounting a cutter drum in the housing | — | 2018-04-10 |
| 8176990 | Apparatus for removing obstructions from a worksite | Ronald L. Major | 2012-05-15 |
| 7472869 | Balancing assembly for rotating cylindrical structures | — | 2009-01-06 |
| 7104510 | Removable balancing assembly for rotating cylindrical structures | — | 2006-09-12 |
| 5259692 | Ground breaking apparatus | Douglas S. Hart, Robert L. White | 1993-11-09 |
| 5203274 | Amphibious vehicle | Douglas S. Hart, Robert L. White | 1993-04-20 |
| 5203729 | Auger-driven amphibious toy | Douglas S. Hart, Robert L. White | 1993-04-20 |