LandOfFree - US Patents - Listing for Pumps,Expansible chamber type

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Gas compressor

Pumps – Expansible chamber type – Plural pumping chambers

Patent

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Gas compressor and method with improved valve assemblies

Pumps – Expansible chamber type – Plural pumping chambers

Reexamination Certificate

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Gas compressor comprising a double acting piston, an...

Pumps – Expansible chamber type – Plural pumping chambers

Reexamination Certificate

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Gas compressor having a variable-volume clearance pocket, and me

Pumps – Expansible chamber type – Plural pumping chambers

Patent

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Gas compressor head and discharge valve construction

Pumps – Expansible chamber type – Valved piston

Patent

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Gas compressor or blower

Pumps – Expansible chamber type – Pumping member position controlled port

Patent

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Gas compressor with reciprocating piston with valve sheath

Pumps – Expansible chamber type – Valved piston

Patent

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Gas compressors

Pumps – Expansible chamber type – Having pumping chamber pressure responsive distributor

Patent

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Gas compressors

Pumps – Expansible chamber type – Having pumping chamber pressure responsive distributor

Patent

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Gas equalizer for downhole pump

Pumps – Expansible chamber type – Pressure responsive distributor opened responsive to pumping...

Patent

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Gas equalizer for downhole pump

Pumps – Expansible chamber type – Pressure responsive distributor opened responsive to pumping...

Patent

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Gas-filled damping element for damping pressure pulsations

Pumps – Expansible chamber type – Having pulsation dampening fluid receiving space

Patent

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Grease pumps

Pumps – Expansible chamber type – Multiple cyclic outlet paths

Patent

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