Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7987915 | Circulating sub with mudsaver for dispensing and circulating fluid in a well bore | Richard Wiggins | 2011-08-02 |
| 7938177 | Circulating sub tool for dispensing and circulating fluid in a well bore | Richard Wiggins | 2011-05-10 |