4. Tools
  5. Wrench, screwdriver, or driver therefor
  6. Machine

Bernd-Georg Pietras

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Apparatus and a method for facilitating the connection of pipes

Tools – Wrench – screwdriver – or driver therefor – Machine
Reexamination Certificate

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Apparatus and method aligning tubulars

Pipe joints or couplings – With assembly means or feature
Reexamination Certificate

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Apparatus and method for aligning tubulars

Tools – Wrench – screwdriver – or driver therefor – Machine
Reexamination Certificate

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Apparatus and method for aligning tubulars

Tools – Wrench – screwdriver – or driver therefor – Machine
Reexamination Certificate

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Apparatus and method for connecting tubulars using a top drive

Wells – Processes – Assembling well part
Reexamination Certificate

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Profile ID: LFUS-PAI-P-726615

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