4. Pipe joints or couplings
  5. With means blocking release of holding means
  6. Auxiliary latch

Paul E. Lynch

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Drill pipe tool joint protector

Plastic and nonmetallic article shaping or treating: processes – With printing or coating of workpiece – Coating or impregnating workpiece before molding or shaping...
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Means to prevent relative rotation of threaded together pin and

Pipe joints or couplings – With means blocking release of holding means – Auxiliary latch
Patent

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Profile ID: LFUS-PAI-P-1537528

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