4. Rotary expansible chamber devices
  5. Heat exchange or non-working fluid lubricating or sealing
  6. Valve regulated non-working fluid

Koutarou Naya

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Screw type vacuum pump with introduced inert gas

Rotary expansible chamber devices – Heat exchange or non-working fluid lubricating or sealing – Valve regulated non-working fluid
Patent

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Screw vacuum pump unit

Pumps – With muffler acting on pump fluid
Patent

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Profile ID: LFUS-PAI-P-122621

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