Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7654340 | Directional reaming system | Kelvin P. Self, Floyd R. Gunsaulis, Gerald A. Stangl, David R. Payne | 2010-02-02 |
| 7389831 | Dual-member auger boring system | Jerry W. Beckwith, Kelvin P. Self, Brent G. Stephenson, Floyd R. Gunsaulis | 2008-06-24 |
| 7195079 | Directional reaming system | Kelvin P. Self, Floyd R. Gunsaulis, Gerald A. Stangl, David R. Payne | 2007-03-27 |
| 6848506 | Rotary driven retrieval tool for horizontal directional drilling operations | Richard F. Sharp, Matthew Dock, John Allan Skinner | 2005-02-01 |