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Scroll-type two stage positive fluid-displacement apparatus with

Rotary expansible chamber devices – Multistage – One working chamber stage encircles another
Patent

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Seal assemblies

Rotary expansible chamber devices – Multistage – Interengaging rotary members
Reexamination Certificate

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Self lubricating vane for a rotary vane cooling system

Rotary expansible chamber devices – Multistage – Sliding vane
Patent

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Series for gear pumps with differing capacities and method...

Rotary expansible chamber devices – Multistage – Interengaging rotary members
Reexamination Certificate

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Sliding segment rotary fluid power translation device

Rotary expansible chamber devices – Multistage – One working chamber stage encircles another
Patent

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Sliding vane type of compressor-expander having differential ecc

Rotary expansible chamber devices – Multistage – Working fluid engages working member serially in...
Patent

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Sperial vacuum pump having a metal bellows for limiting circular

Rotary expansible chamber devices – Multistage
Patent

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Stackable rotary vane pump with improved volumetric efficiency

Rotary expansible chamber devices – Multistage
Patent

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