Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7093680 | Subsurface signal transmitting apparatus | James W. Haslett, Robert E. Smallwood, Frederick N. Trofimenkoff | 2006-08-22 |
| 6672383 | Subsurface signal transmitting apparatus | James W. Haslett, Robert E. Smallwood, Frederick N. Trofimenkoff | 2004-01-06 |
| 6405795 | Subsurface signal transmitting apparatus | James W. Haslett, Robert E. Smallwood, Frederick N. Trofimenkoff | 2002-06-18 |
| 6209632 | Subsurface signal transmitting apparatus | James W. Haslett, Robert E. Smallwood, Frederick N. Trofimenkoff | 2001-04-03 |
| 6065544 | Method and apparatus for multiple packer pressure relief | — | 2000-05-23 |
| 4880257 | Pressure compensation multi tubular safety joint | — | 1989-11-14 |
| 4212562 | Method and apparatus for leveling templates for offshore subterranean wells | William Bundy Stone | 1980-07-15 |