Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5669446 | Methods for breaking viscosified fluids | Michael L. Walker, Chris E. Shuchart, Billy Slabaugh, Michael A. McCabe | 1997-09-23 |
| 5669447 | Methods for breaking viscosified fluids | Michael L. Walker, Chris E. Shuchart | 1997-09-23 |