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Strengthened pipe fitting having encapsulated reenforcing...

Pipe joints or couplings – Screw
Reexamination Certificate

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Submersible pump drop pipe and casing assembly connection...

Pipe joints or couplings – Screw
Reexamination Certificate

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Submersible pump drop pipe and casing assembly connection...

Pipe joints or couplings – Screw
Reexamination Certificate

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Submersible pump drop pipe and casing assembly connection...

Pipe joints or couplings – Screw
Reexamination Certificate

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Submersible pump drop pipe and casing assembly connection...

Pipe joints or couplings – Screw
Reexamination Certificate

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Thread coupling for drill string members

Pipe joints or couplings – Screw
Patent

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Threaded attachment

Pipe joints or couplings – Screw
Reexamination Certificate

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Threaded connection especially for radically plastically...

Pipe joints or couplings – Screw
Reexamination Certificate

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Threaded joint for steel pipes

Pipe joints or couplings – Screw
Reexamination Certificate

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Threaded pipe connector

Pipe joints or couplings – Screw
Reexamination Certificate

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Threaded pipe connector

Pipe joints or couplings – Screw
Reexamination Certificate

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Threaded pipe coupling

Pipe joints or couplings – Screw – Attached thread bushing
Patent

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Tubular connector

Pipe joints or couplings – Screw – Interrupted thread
Patent

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