4. Pipe joints or couplings
  5. Having plural independent paths
  6. For concentric tubes or pipes

Michael D. Langlais

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Gravel packing a well

Wells – Processes – Graveling or filter forming
Reexamination Certificate

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Handling and assembly equipment and method

Wells – Processes – Assembling well part
Reexamination Certificate

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Joining tubular members

Wells – Processes – Assembling well part
Reexamination Certificate

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Joining tubular members

Pipe joints or couplings – Having plural independent paths – For concentric tubes or pipes
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2286538

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