Walter S. Gearhart

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Cyclic-action, siphon-operated buoyant toy

Patent

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Fuel efficient propulsor for outboard motors

Marine propulsion – Screw propeller – Having means to control flow around propeller
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Technique for reducing acoustic radiation in turbomachinery

Rotary kinetic fluid motors or pumps – With sound or vibratory wave absorbing or preventing means...
Reexamination Certificate

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Profile ID: LFUS-PAI-P-389078

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