Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9593626 | Radial engine piston-crankshaft interfaces | Joseph B. Crover | 2017-03-14 |
| 9145648 | Hydraulic spike puller | — | 2015-09-29 |
| 7131897 | Portable rail cutting apparatus | — | 2006-11-07 |
| 7059947 | Portable rail cutting apparatus | — | 2006-06-13 |
| 5174386 | Ground rod driving apparatus | — | 1992-12-29 |
| 4614241 | Impact tool assembly with bit isolating means | — | 1986-09-30 |
| 4596292 | Subsoil penetrating apparatus | — | 1986-06-24 |