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Energy efficient fan

Fluid reaction surfaces (i.e. – impellers) – Articulated – resiliently mounted or self-shifting impeller... – Including weight bias means
Reexamination Certificate

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Extreme mu rotor

Fluid reaction surfaces (i.e. – impellers) – Articulated – resiliently mounted or self-shifting impeller... – Including weight bias means
Reexamination Certificate

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Variable pitch counterweighted propeller system with releasable

Fluid reaction surfaces (i.e. – impellers) – Articulated – resiliently mounted or self-shifting impeller... – Including weight bias means
Patent

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Variable pitch marine propeller with hydrodynamic shifting

Fluid reaction surfaces (i.e. – impellers) – Articulated – resiliently mounted or self-shifting impeller... – Including weight bias means
Patent

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Wind generator of the type with automatic power regulation

Fluid reaction surfaces (i.e. – impellers) – Articulated – resiliently mounted or self-shifting impeller... – Including weight bias means
Reexamination Certificate

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Windmill structure and power generator

Fluid reaction surfaces (i.e. – impellers) – Articulated – resiliently mounted or self-shifting impeller... – Including weight bias means
Patent

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