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Method and apparatus for blocking pipes

Pipes and tubular conduits – With closures and plugs – Laterally insertable
Reexamination Certificate

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Method and apparatus for blocking the flow of fluids through an

Pipes and tubular conduits – With closures and plugs – Laterally insertable
Patent

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Method and apparatus for pressure testing pipe lines

Pipes and tubular conduits – With closures and plugs – Laterally insertable
Reexamination Certificate

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Pipe cleaning and plugging apparatus

Pipes and tubular conduits – With closures and plugs – Laterally insertable
Patent

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Pipe sealing apparatus

Pipes and tubular conduits – With closures and plugs – Laterally insertable
Patent

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Pipe stopper method and apparatus

Pipes and tubular conduits – With closures and plugs – Laterally insertable
Patent

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Pipeline plugger

Pipes and tubular conduits – With closures and plugs – Laterally insertable
Patent

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Pipeline plugger

Pipes and tubular conduits – With closures and plugs – Laterally insertable
Patent

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Purging blind

Pipes and tubular conduits – With closures and plugs – Laterally insertable
Patent

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Reheater isolation device and chemical connector

Pipes and tubular conduits – With closures and plugs – Laterally insertable
Patent

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Safety blinding device

Pipes and tubular conduits – With closures and plugs – Laterally insertable
Patent

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Sealing apparatus for a valve body opening

Pipes and tubular conduits – With closures and plugs – Laterally insertable
Patent

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Sliding blade closure apparatus with inflatable sealing ring

Pipes and tubular conduits – With closures and plugs – Laterally insertable
Patent

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Spectacle line blind with vent

Pipes and tubular conduits – With closures and plugs – Laterally insertable
Patent

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Stop-gate apparatus and methods of use thereof

Pipes and tubular conduits – With closures and plugs – Laterally insertable
Patent

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