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

Benjamin Hoffmann

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Man-propelled hydrofoil boat

Marine propulsion – Operator powered drive for propelling means – Rotary cranking arm
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Seal compensated geometry rotary motion device

Rotary expansible chamber devices – Working member has planetary or planetating movement – Plural working members or chambers
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Profile ID: LFUS-PAI-P-1872022

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