4. Wells
  5. Packers or plugs
  6. Cup type

James M. Sutherland

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Oil well pump power unit

Machine element or mechanism – Mechanical movements – Reciprocating or oscillating to or from alternating rotary
Patent

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Wellhead isolation tool nipple

Wells – Packers or plugs – Cup type
Patent

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Wellhead seal probe

Wells – Above ground apparatus – With assembly or disassembly means
Patent

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Profile ID: LFUS-PAI-P-1437139

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