4. Wells
  5. Expansible anchor or casing
  6. Liner hanger

Qiu Shi Zheng

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Energized sealing cartridge for annulus sealing between...

Wells – Expansible anchor or casing – Liner hanger
Reexamination Certificate

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Pressure balanced fluid control device

Valves and valve actuation – Mechanical movement actuator – Particularly packed or sealed
Reexamination Certificate

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Pressure balanced fluid control device

Valves and valve actuation – Balanced valves – Reciprocating
Reexamination Certificate

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Stackable metallic seal and method of using same

Seal for a joint or juncture – Seal between relatively movable parts – Circumferential contact seal for other than piston
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2594967

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