Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7222668 | Sample extraction system for boreholes | Douglas J. Belshaw, James Gerard Pianosi | 2007-05-29 |
| 6758274 | Sample extraction system for boreholes | John Howard Parent, Douglas J. Belshaw | 2004-07-06 |
| 6581682 | Expandable borehole packer | John Howard Parent, James Gerard Pianosi | 2003-06-24 |
| 5526879 | Introduction of particulate material into a borehole | William S. Burrows, Andrew R. Dobson | 1996-06-18 |