4. Wells
  5. Processes
  6. Placing or shifting well part

Marcus A. Avant

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Ball seat having ball support member

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

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Controlled pressure equalization of atmospheric chambers

Wells – Processes – Placing or shifting well part
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2183099

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