4. Pipe joints or couplings
  5. With casing, lining or protector

Arthur E. Bergstrom

Inventor

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Blast joint

Pipes and tubular conduits – Distinct layers – With mechanical means to hold layers in contact
Patent

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Blast joint for subterranean wells

Pipes and tubular conduits – Distinct layers – With mechanical means to hold layers in contact
Patent

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Compensated blast joint for oil well production tubing

Pipe joints or couplings – With casing – lining or protector
Patent

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Profile ID: LFUS-PAI-P-787527

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