4. Marine propulsion
  5. Operator powered drive for propelling means
  6. Rotary cranking arm

Roberto Siviero

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Coaxial valve-type alternating pump especially for boats...

Pumps – Expansible chamber type – Plural pumping chambers
Reexamination Certificate

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Land vehicle floatable and steerable in water

Marine propulsion – Self-propelled vehicle having land and water propulsion means – Having separated propulsion means for land and water
Patent

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Portable apparatus for using bicycles as a type of watercraft

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

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Profile ID: LFUS-PAI-P-180245

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