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Diaphragm vacuum pump

Pumps – Successive stages
Patent

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Dispenser pump

Pumps – Successive stages – Reciprocating rigid stages
Patent

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Displacement pump for low-pulsation delivery of a liquid

Pumps – Successive stages – Stages driven by relatively movable motor working members
Patent

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Displacement slurry pump

Pumps – Successive stages – Reciprocating rigid stages
Patent

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Distributor type fuel injection pumps

Pumps – Successive stages – Fluid motor for one stage supplied from another stage
Patent

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Dosing pump

Pumps – Successive stages
Reexamination Certificate

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Double action pump

Pumps – Successive stages – Condition responsive control of fluid
Patent

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Double-acting differential piston supply pump

Pumps – Successive stages – With interstage discharge or additional discharge from...
Patent

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Down hole pump having a gas release valve

Pumps – Successive stages – Reciprocating rigid stages
Patent

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Dry compressing vacuum pump having a gas ballast device

Pumps – Successive stages – With interstage intake or additional inlet to latter stage
Reexamination Certificate

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Dry vacuum pump

Pumps – Successive stages – Reciprocating rigid stages
Patent

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Dual auger top loading pumping system for manure tank wagon

Pumps – Successive stages
Patent

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Dual pressure hydraulic pump

Pumps – Successive stages – With interstage discharge or additional discharge from...
Patent

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Dual pump system in which the discharge of a first pump is...

Pumps – Successive stages – Fluid motor for one stage supplied from another stage
Utility Patent

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Dual stage, dual mode air pump

Pumps – Successive stages – Reciprocating rigid stages
Patent

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Dual-stage, plunger-type piston compressor with minimal...

Pumps – Successive stages – Parallel stages to or from single stage
Reexamination Certificate

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Efficient Multistage pump

Pumps – Successive stages – With interstage discharge or additional discharge from...
Patent

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Electric motor pump for swimming pool maintenance

Pumps – Successive stages – With interstage discharge or additional discharge from...
Reexamination Certificate

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Electromagnetic fuel delivery and metering pump

Pumps – Successive stages – With interstage discharge or additional discharge from...
Patent

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Electromagnetic fuel delivery and metering pump

Pumps – Successive stages – With interstage discharge or additional discharge from...
Patent

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