4. Wells
  5. Grapple and well anchored lifting means

Thomas Schasteen

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Ball seat having fluid activated ball support

Wells – Valves – closures or changeable restrictors – Operated by dropped element
Reexamination Certificate

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Latching tool for retrieving wellbore devices

Wells – Grapple and well anchored lifting means
Patent

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Motorized wellbore fishing tool

Wells – Grapple and well anchored lifting means
Patent

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Ultrasonic logging tool with rotating exposed transducer

Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Well logging
Patent

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Wellbore tool swivel connector

Electrical connectors – Interrelated connectors relatively movable during use – Movement about axis
Patent

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Profile ID: LFUS-PAI-P-239316

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