4. Wells
  5. Valves, closures or changeable restrictors
  6. Destructible element

Tommie A. Freeman

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Apparatus for actuating a well tool and method for use of same

Wells – Processes – With indicating – testing – measuring or locating
Reexamination Certificate

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Combination cementing shoe and basket

Wells – Packers or plugs – Cup type
Patent

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Differential fill valve assembly

Wells – Valves – closures or changeable restrictors – Destructible element
Patent

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Downhole drilling apparatus

Boring or penetrating the earth – Processes – Boring curved or redirected bores
Reexamination Certificate

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Downhole drilling apparatus

Wells – Wells with lateral conduits
Reexamination Certificate

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Profile ID: LFUS-PAI-P-753038

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