Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE38418 | Dual member pipe joint for a dual member drill string | Cody L. Sewell | 2004-02-10 |
| 6543551 | Pipe handling device | Darrel W. Sparks, Richard W. McEwen, Cody L. Sewell, Ronald A. Frazier, James E. Franklin +2 more | 2003-04-08 |
| RE37975 | Directional boring head with blade assembly | Brent G. Stephenson, Cody L. Sewell, Richard P. Dunn | 2003-02-04 |
| RE37450 | Directional multi-blade boring head | Cody L. Sewell | 2001-11-20 |
| 6216803 | Anchor assembly | — | 2001-04-17 |
| 6085852 | Pipe handling device | Darrel W. Sparks, Richard W. McEwen, Cody L. Sewell, Ronald A. Frazier, James E. Franklin +1 more | 2000-07-11 |
| 5941322 | Directional boring head with blade assembly | Brent G. Stephenson, Cody L. Sewell | 1999-08-24 |
| 5799740 | Directional boring head with blade assembly | Brent G. Stephenson, Cody L. Sewell | 1998-09-01 |
| 5682956 | Dual member pipe joint for a dual member drill string | Cody L. Sewell | 1997-11-04 |
| 5479728 | Apparatus for backfilling and tamping a trench | James E. Franklin, Cody L. Sewell | 1996-01-02 |
| 5392868 | Directional multi-blade boring head | Cody L. Sewell | 1995-02-28 |
| 5390750 | Downhole compaction and stabilization back reamer and drill bit | Cody L. Sewell | 1995-02-21 |
| 5361855 | Method and casing for excavating a borehole | Kenneth W. Schuermann, James E. Franklin | 1994-11-08 |
| 5341887 | Directional multi-blade boring head | Cody L. Sewell | 1994-08-30 |
| 5267621 | Drill pipe breakout device | Cody L. Sewell | 1993-12-07 |
| 5242026 | Method of and apparatus for drilling a horizontal controlled borehole in the earth | Cody L. Sewell | 1993-09-07 |
| 5220964 | Downhole compaction and stabilization back reamer and drill bit | Cody L. Sewell | 1993-06-22 |
| 5212891 | Soft excavator | Kenneth W. Schuermann, James E. Franklin | 1993-05-25 |
| 5148880 | Apparatus for drilling a horizontal controlled borehole in the earth | Douglas W. Lee, James E. Franklin, Richard P. Dunn | 1992-09-22 |
| 4981396 | Multiple pipe installation backfilling, and compaction attachment | Philip E. Albertson, Freddie Nichols | 1991-01-01 |
| 4963075 | Radial diaphragm pump | Philip E. Albertson | 1990-10-16 |
| 4475604 | Mobile machine for subterranean installation of piping and the like | Philip E. Albertson | 1984-10-09 |
| 4422794 | Coupling for earth boring units | — | 1983-12-27 |