Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5137087 | Casing cementer with torque-limiting rotating positioning tool | David D. Szarka, Richard L. Giroux | 1992-08-11 |
| 5133644 | Multi-pressure compensation of variable displacement pump | Stephen W. Barr, Timothy D. Rice | 1992-07-28 |
| 5109925 | Multiple stage inflation packer with secondary opening rupture disc | Lee W. Stepp, Richard L. Giroux, Jerome F. Borges | 1992-05-05 |
| 4771801 | Protective cover assembly with reverse buckling disc | William Keith Maddox | 1988-09-20 |