Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8499827 | Sand control screen assembly and method for use of same | Ronald Glen Dusterhoft, Carl Bismark Ferguson, Floyd R. Simonds, Tommy Frank Grigsby, William Mark Richards +1 more | 2013-08-06 |
| 8291972 | Sand control screen assembly and method for use of same | Ronald Glen Dusterhoft, Carl Bismark Ferguson, Floyd R. Simonds, Tommy Frank Grigsby, William Mark Richards +1 more | 2012-10-23 |
| 7866383 | Sand control screen assembly and method for use of same | Ronald Glen Dusterhoft, Carl Bismark Ferguson, Tommy Frank Grigsby, Floyd R. Simonds, William Mark Richards | 2011-01-11 |
| 7814973 | Sand control screen assembly and method for use of same | Ronald Glen Dusterhoft, Carl Bismark Ferguson, Floyd R. Simonds, Tommy Frank Grigsby, William Mark Richards +1 more | 2010-10-19 |