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

Bernard Herman Van Bilderbeek

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Clamping well casings

Wells – Above ground apparatus – Inner member anchor or seal with lateral port
Patent

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Externally activated seal system for wellhead

Wells – Above ground apparatus – External anchoring or bracing means
Reexamination Certificate

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Externally activated seal system for wellhead

Wells – Above ground apparatus – External anchoring or bracing means
Reexamination Certificate

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Pipe joint

Pipe joints or couplings – With fluid pressure seal
Reexamination Certificate

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Seal

Wells – Expansible anchor or casing – With wedge or cam and friction drag
Reexamination Certificate

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Profile ID: LFUS-PAI-P-876138

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