4. Rotary expansible chamber devices
  5. Interengaging rotating members
  6. Helical or herringbone

Masaru Mito

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Dry screw vaccum pump having nitrogen injection

Rotary expansible chamber devices – Heat exchange or non-working fluid lubricating or sealing – Non-working and working fluids intermix in working chamber
Reexamination Certificate

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Dry screw vacuum pump having spheroidal graphite cast iron...

Rotary expansible chamber devices – Specific material
Reexamination Certificate

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Screw rotor for vacuum pumps

Rotary expansible chamber devices – Interengaging rotating members – Helical or herringbone
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2493717

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