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Casing alignment tool

Wells – Above ground apparatus – With means facilitating connecting or disconnecting...
Patent

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Casing centering tool assembly

Wells – Above ground apparatus – With means facilitating connecting or disconnecting...
Reexamination Certificate

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Choke and kill line systems for blowout preventers

Wells – Above ground apparatus – With means facilitating connecting or disconnecting...
Reexamination Certificate

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Combined grip control of elevator and spider slips

Wells – Above ground apparatus – With means facilitating connecting or disconnecting...
Reexamination Certificate

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Compact casing tongs for use on top head drive earth drilling ma

Wells – Above ground apparatus – With means facilitating connecting or disconnecting...
Patent

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