Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8051909 | Method and apparatus for positioning the proximal end of a tubular string above a spider | Jeremy Richard Angelle, Robert L. Tribodeaux, Jr., Donald E. Mosing, Vernon Bouligny, Hans-Weddo Schmidt | 2011-11-08 |
| 7987915 | Circulating sub with mudsaver for dispensing and circulating fluid in a well bore | Truman R. Davis | 2011-08-02 |
| 7938177 | Circulating sub tool for dispensing and circulating fluid in a well bore | Truman R. Davis | 2011-05-10 |