Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8782856 | Rope termination | Hong Tri Thoi | 2014-07-22 |
| D328904 | Power module for woodworking tools | Rickey Burns | 1992-08-25 |
| 4512419 | Coring device with an improved core sleeve and anti-gripping collar | James T. Aumann | 1985-04-23 |
| 4278138 | Composite heavy metal drill collar | James T. Aumann, Lothar H. Waldes | 1981-07-14 |
| 4244432 | Earth-boring drill bits | Bruce H. Walker, Coy M. Fielder | 1981-01-13 |
| 4234048 | Drill bits embodying impregnated segments | — | 1980-11-18 |