LandOfFree - US Patents - Listing for Pumps,Drilled well free piston-type pump

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Plunger for well casings and other tubulars

Pumps – Drilled well free piston-type pump

Reexamination Certificate

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Plunger for well casings and other tubulars

Pumps – Drilled well free piston-type pump

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Plunger lift control

Pumps – Drilled well free piston-type pump – Having condition or position responsive control of motive...

Patent

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Plunger lift tool

Pumps – Drilled well free piston-type pump – Having condition or position responsive control of motive...

Patent

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Pressure-operated oil and gas well swabbing device

Pumps – Drilled well free piston-type pump – Having condition or position responsive control of pump...

Patent

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Pressure-operated valving for oil and gas well swabs

Pumps – Drilled well free piston-type pump

Patent

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Production plunger

Pumps – Drilled well free piston-type pump

Patent

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Pump tool

Pumps – Drilled well free piston-type pump – Having condition or position responsive control of pump...

Patent

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Valveless free plunger and system for well pumping

Pumps – Drilled well free piston-type pump

Patent

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Velocity actuated valve for a downhole pump

Pumps – Drilled well free piston-type pump

Patent

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