4. Brakes
  5. Rod

John L. Baugh

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Annulus operated test valve

Wells – Valves – closures or changeable restrictors – Fluid operated
Patent

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Apparatus and method for cementing a liner in a well bore

Wells – Processes – Cementing – plugging or consolidating
Patent

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Apparatus for dropping articles downhole

Wells – With below and above ground modification – Head for tool – piston or cleaner
Reexamination Certificate

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Ball dropping assembly

Wells – Above ground apparatus – Well caps or casing heads
Patent

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Bottom lock pipe seal assembly

Wells – Packers or plugs – With expanding anchor
Patent

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Profile ID: LFUS-PAI-P-47587

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