4. Fluid reaction surfaces (i.e., impellers)
  5. Having positive means for impeller adjustment

Leroy A. Fizer

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DC bus short circuit compliant power generation systems...

Electricity: single generator systems – Automatic control of generator or driving means – Electrical conditions in circuit other than that of...
Reexamination Certificate

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Electromechanical apparatus for varying blade of variable-pitch

Fluid reaction surfaces (i.e. – impellers) – Having positive means for impeller adjustment
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Variable frequency reduced speed variation electric drive

Electricity: motive power systems – Induction motor systems – Primary circuit control
Reexamination Certificate

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