Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5671646 | Tube end squaring tool | William E. Sandford | 1997-09-30 |
| D383960 | Tube end squaring tool | William E. Sandford | 1997-09-23 |
| 5515756 | Roller cutter module with force equalizer | William E. Sandford | 1996-05-14 |
| 5429021 | Elliptical manway cutter | Clement Tremblay | 1995-07-04 |
| 4667548 | End preparation tool for pipe fittings | Jerald VanderPol, Randall Schuster, Terry B. Linton | 1987-05-26 |
| D264678 | Pipe end preparation tool | John E. Pertle | 1982-06-01 |