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Pumps operated by the rise and fall of water

Pumps – Motor driven – Buoyant motor
Patent

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Pumps with diaphragms bonded as bellows

Pumps – Motor driven – Electric or magnetic motor
Reexamination Certificate

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Pumps with diaphragms bonded as bellows

Pumps – Motor driven – Electric or magnetic motor
Reexamination Certificate

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Pumps with floating wrist pins

Pumps – Three or more cylinders arranged in parallel – radial – or... – Radial cylinders
Patent

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Pumps with servo-type actuation for cheek plate unloading

Pumps – Processes
Patent

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Pure rotary positive displacement device

Pumps – Three or more cylinders arranged in parallel – radial – or... – Radial cylinders
Patent

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Purge flow control in rotary blood pumps

Pumps – Motor driven – Electric or magnetic motor
Patent

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Purged valve assembly and method of sealing

Pumps – Processes
Patent

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Push rod in an electrical pump adapted for use with a piston...

Pumps – Motor driven – Electric or magnetic motor
Reexamination Certificate

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Push rod in an electrical pump adapted for use with a piston...

Pumps – Motor driven – Electric or magnetic motor
Reexamination Certificate

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Push-pull windmill head having double beam pumping jack

Pumps – Motor driven – Fluid current motor
Patent

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