Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8074511 | Use of flexible member for borehole diameter measurement | Cornelis Huiszoon, Homero C. Castillo, Roger R. Steinsiek, Gabriel Villasmil | 2011-12-13 |
| 8074712 | Stop collar friction clamping device | Roger R. Steinsiek, James C. Hunziker | 2011-12-13 |