Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6825726 | Power amplifier with multiple power supplies | John B. French | 2004-11-30 |
| 4736533 | Interiorly located, rotating, self sharpening replaceable digging tooth apparatus and method | Michael E. Tubbs | 1988-04-12 |