4. Pipe joints or couplings
  5. Particular interface
  6. Tapered

Michihiko Iwamoto

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Apparatus and method of measuring outer diameter of worked...

Geometrical instruments – Gauge – Circular size
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Method and apparatus for determining the tightened condition of

Measuring and testing – Dynamometers – Responsive to torque
Patent

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Threaded joint for steel pipes

Pipe joints or couplings – Particular interface – Tapered
Reexamination Certificate

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Threaded joint for steel pipes

Pipe joints or couplings – Particular interface – Tapered
Reexamination Certificate

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Threaded joint for tubes

Pipe joints or couplings – Particular interface – Tapered
Patent

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Profile ID: LFUS-PAI-P-1541627

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