LandOfFree - US Patents - Listing for Marine propulsion,Operator powered drive for propelling means

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Screw propelled water saddle

Marine propulsion – Operator powered drive for propelling means – Rotary cranking arm

Patent

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Self-propelled surfboard

Marine propulsion – Operator powered drive for propelling means – Rotary cranking arm

Reexamination Certificate

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Self-tensioning pedal drive mechanism for a human powered boat

Marine propulsion – Operator powered drive for propelling means – Rotary cranking arm

Reexamination Certificate

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Steering apparatus for an inflatable raft

Marine propulsion – Operator powered drive for propelling means – Rotary cranking arm

Patent

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Surfboard type boat convertible into sailboat or buoy

Marine propulsion – Operator powered drive for propelling means – Fluid pump

Patent

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Swimmers paddle wheel

Marine propulsion – Operator powered drive for propelling means – Rotary cranking arm

Reexamination Certificate

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Swimming aid

Marine propulsion – Operator powered drive for propelling means – Rotary cranking arm

Patent

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Swimming device

Marine propulsion – Operator powered drive for propelling means – Rotary cranking arm

Reexamination Certificate

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Swimming device

Marine propulsion – Operator powered drive for propelling means – Rotary cranking arm

Patent

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Swimming propulsion device

Marine propulsion – Operator powered drive for propelling means

Reexamination Certificate

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Swimming wheel apparatus

Marine propulsion – Operator powered drive for propelling means – Rotary cranking arm

Patent

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Swing-operated paddle-wheel water-craft

Marine propulsion – Operator powered drive for propelling means

Patent

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