Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8377155 | Auger gasifier with continuous feed | — | 2013-02-19 |
| 7686098 | Chain driven reciprocating hammer with work piece centering and clamping | — | 2010-03-30 |
| 6619407 | Air-operated hammer | Charles L. Hawkins | 2003-09-16 |
| 6349658 | Auger combustor with fluidized bed | — | 2002-02-26 |
| 4553778 | Implement snubbing device | — | 1985-11-19 |
| 4387752 | Tree shearing apparatus | — | 1983-06-14 |
| 4331084 | Fuel feed technique for auger combustor | Robert E. Fitch | 1982-05-25 |
| 4331085 | Exit gas control for flame stabilization and performance tuning of starved-air auger combustor | Robert E. Fitch, Gordon H. Tucker | 1982-05-25 |
| 4315468 | Control system for a single auger starved-air combustor | Robert E. Fitch, Gordon H. Tucker | 1982-02-16 |