LandOfFree - US Patents - Listing for Rotary expansible chamber devices,Multistage,Interengaging rotary members

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Screw compressor

Rotary expansible chamber devices – Multistage – Interengaging rotary members

Reexamination Certificate

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Screw compressor

Rotary expansible chamber devices – Multistage – Interengaging rotary members

Reexamination Certificate

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Screw fluid machine

Rotary expansible chamber devices – Multistage – Interengaging rotary members

Patent

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Screw pump with improved efficiency of drawing fluid

Rotary expansible chamber devices – Multistage – Interengaging rotary members

Reexamination Certificate

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Screw rotor machine with hollow thread rotor enclosing a screw c

Rotary expansible chamber devices – Multistage – Interengaging rotary members

Patent

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Screw vacuum pump

Rotary expansible chamber devices – Multistage – Interengaging rotary members

Patent

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Screw vacuum pump having a decreasing pitch for the screw member

Rotary expansible chamber devices – Multistage – Interengaging rotary members

Patent

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Screw vacuum pump with male and female screw rotors having...

Rotary expansible chamber devices – Multistage – Interengaging rotary members

Reexamination Certificate

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Seal assemblies

Rotary expansible chamber devices – Multistage – Interengaging rotary members

Reexamination Certificate

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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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