James Jacob Free

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Details James Jacob Free James Jacob Free

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

: Inventor
: active

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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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Profile ID: LFUS-PAI-P-2698972

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