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Fluid reaction surfaces (i.e., impellers)
Spiral blade or flow passage
Flow confining casing, shroud or passage
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Fluid pump with air inducer
Fluid reaction surfaces (i.e. – impellers) – Spiral blade or flow passage – Flow confining casing – shroud or passage
Patent
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Pump impeller
Fluid reaction surfaces (i.e. – impellers) – Spiral blade or flow passage – Flow confining casing – shroud or passage
Reexamination Certificate
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