A motorized bicycle gear shift device comprising a derailleur and an electric motor, associated directly with the derailleur, for controlling the derailleur and an electric transducer of absolute type, also associated with the derailleur for producing an electric signal indicative of the absolute position of the movable body of the derailleur.

 
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> Handle/grip and method for designing the like

> System and apparatus for propelling and carrying a user within a confined interior
~ 00264