Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D303487 | Portable pipe end preparation tool with right angle feed control | William E. Sandford | 1989-09-19 |
| 4667548 | End preparation tool for pipe fittings | Henry Astle, Jerald VanderPol, Randall Schuster | 1987-05-26 |