Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7909108 | System and method for servicing a wellbore | Loren Swor, Donald R. Smith, Robert Clayton, Jeffrey A. Jordan | 2011-03-22 |
| 7644774 | Selectively activated float equipment | Donny Winslow, Aimee Greening | 2010-01-12 |
| 7597146 | Methods and apparatus for completion of well bores | Donald W. Winslow | 2009-10-06 |
| 7533728 | Ball operated back pressure valve | Donald W. Winslow | 2009-05-19 |
| 7527104 | Selectively activated float equipment | Donny Winslow, Aimee Greening | 2009-05-05 |
| 5540279 | Downhole tool apparatus with non-metallic packer element retaining shoes | Donald R. Smith, Kevin T. Berscheidt | 1996-07-30 |