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Pad type plunger

Wells – With below and above ground modification – Eduction pump or plunger in well
Reexamination Certificate

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Parallel tubing system for pumping well fluids

Wells – With below and above ground modification – Above ground actuating means for below ground device
Patent

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PC pump inlet backwash method and apparatus

Wells – With below and above ground modification – Eduction pump or plunger in well
Reexamination Certificate

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Pipe laying system

Wells – With below and above ground modification – Eduction pump or plunger in well
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Plug container

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

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Plunger lift system for well

Wells – With below and above ground modification – Eduction pump or plunger in well
Reexamination Certificate

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Plunger with flow passage and improved stopper

Wells – With below and above ground modification – Eduction pump or plunger in well
Reexamination Certificate

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Polished rod for oil well pumping

Wells – With below and above ground modification – Above ground actuating means for below ground device
Patent

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Portable jet pump system with pump lowered down hole and raised

Wells – With below and above ground modification – Eduction pump or plunger in well
Patent

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Portable well fluid extraction apparatus

Wells – With below and above ground modification – With receptacle for insertion into well
Reexamination Certificate

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Portable, surface-mounted well pump

Wells – With below and above ground modification – With receptacle for insertion into well
Reexamination Certificate

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Pressure-compensated dual marine riser

Wells – With below and above ground modification – Eduction pump or plunger in well
Patent

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Progressing cavity pump production tubing having permanent...

Wells – With below and above ground modification – Eduction pump or plunger in well
Reexamination Certificate

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Pulley-drive lifting system

Wells – With below and above ground modification – Eduction pump or plunger in well
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Pump down tool and check valve

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

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Pump system and method for pumping well fluids

Wells – With below and above ground modification – Above ground actuating means for below ground device
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Pump-out plug catcher

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

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Pumping system for oil wells

Wells – With below and above ground modification – Eduction pump or plunger in well
Reexamination Certificate

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