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Patent applications and USPTO patent grants for Schasteen; Thomas.The latest application filed is for "ball seat having fluid activated ball support".
Patent | Date |
---|---|
Ball seat having fluid activated ball support Grant 7,637,323 - Schasteen , et al. December 29, 2 | 2009-12-29 |
Ball seat having fluid activated ball support App 20090044946 - Schasteen; Thomas ;   et al. | 2009-02-19 |
Wellbore tool swivel connector Grant 4,909,741 - Schasteen , et al. March 20, 1 | 1990-03-20 |
Ultrasonic logging tool with rotating exposed transducer Grant 4,876,672 - Petermann , et al. October 24, 1 | 1989-10-24 |
Motorized wellbore fishing tool Grant 4,856,582 - Smith , et al. August 15, 1 | 1989-08-15 |
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