4. Wells
  5. Processes
  6. With indicating, testing, measuring or locating

David Hofman

Attorney

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Ballistically compatible backpressure valve

Wells – Processes – Operating valve – closure – or changeable restrictor in a well
Reexamination Certificate

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Downhole application for a backpressure valve

Wells – Processes – Placing or shifting well part
Reexamination Certificate

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Dual conductor fiber optic cable

Optical waveguides – Optical transmission cable – With electrical conductor in the same cable
Reexamination Certificate

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Electronic control for winch tension

Implements or apparatus for applying pushing or pulling force – Apparatus for hauling or hoisting load – including driven... – Device includes rotatably driven – cable contacting drum
Reexamination Certificate

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Hydrocarbon application hose

Pipes and tubular conduits – Flexible – Distinct layers
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2187964

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