4. Rotary expansible chamber devices
  5. With mechanical sealing

Ryosuke Koshizaka

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Shaft seal structure of vacuum pumps

Rotary expansible chamber devices – With mechanical sealing
Reexamination Certificate

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Vacuum pump having main and sub pumps

Pumps – Successive stages – Fluid motor for one stage supplied from another stage
Reexamination Certificate

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Vacuum pump with improved oil lubrication

Rotary expansible chamber devices – Heat exchange or non-working fluid lubricating or sealing – With pump for non-working fluid
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2640212

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