4. Wells
  5. Above ground apparatus
  6. With means for inserting fluid into well

Boris (Bruce) P. Cherewyk

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Ball catcher for wellbore operations

Wells – Above ground apparatus – With flow restrictions
Reexamination Certificate

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Packoff nipple

Wells – Packers or plugs – Cup type
Reexamination Certificate

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System and apparatus for sealing a fracturing head to a...

Wells – Above ground apparatus – With means for inserting fluid into well
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2202658

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