Akerman; Steve
Patent Applications and Registrations
Patent applications and USPTO patent grants for Akerman; Steve.The latest application filed is for "drilling derrick and apparatus base assembly".
- Akerman; Steve - Purcell OK US
| Patent | Date |
|---|---|
| Drilling derrick and apparatus base assembly Grant 8,985,239 - Akerman March 24, 2 | 2015-03-24 |
| Telescoping drilling derrick with guide track and top drive guide assembly Grant 8,893,825 - Akerman November 25, 2 | 2014-11-25 |
| Top drive and crown apparatus for drilling derrick Grant 8,684,336 - Akerman April 1, 2 | 2014-04-01 |
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