4. Rotary kinetic fluid motors or pumps
  5. With means for controlling casing or flow guiding means in...

Tetsuo Hirai

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Scroll-type vacuum pump with oil seal between suction and discha

Rotary expansible chamber devices – With signal – indicator or transparent inspection means
Patent

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Turbine rotatable in one direction in a reciprocating flow

Rotary kinetic fluid motors or pumps – With means for controlling casing or flow guiding means in...
Patent

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Windmill and windmill control method

Fluid reaction surfaces (i.e. – impellers) – With means positioning fluid current driven impeller... – Feathering cycle related to flow direction
Reexamination Certificate

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Profile ID: LFUS-PAI-P-739690

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