4. Ships
  5. Displacement-type hull
  6. Multiple hulls

Roger O. Durham

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Bicycle crank arm with internal flange

Machine element or mechanism – Elements – Cranks and pedals
Patent

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Catamaran for sailing and rowing

Ships – Displacement-type hull – Multiple hulls
Patent

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Chain engagement slot for bicycle sprockets

Endless belt power transmission systems or components – Positive drive pulley or guide roll
Patent

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Derailleur mechanism for bicycles

Endless belt power transmission systems or components – Control for variable input to output speed-ratio – Including belt shiftable axially from one to another surface...
Patent

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Drawbolt bearing support for bicycle pedals

Cutlery
Patent

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Profile ID: LFUS-PAI-P-160298

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