Bicycles; structural parts therefor; Parts for bicycles, namely, derailleurs, driving and control means for change-speed gears, front changers, cable guides, cables, sheathers, knobs, control levers, toe clips, toe straps, pedal cleats, saddle covers, saddle bags, cargo carriers, luggage carriers, canteen racks, mud guards, chain guards, bells, stop stands, mirrors, tire patches, bicycle holders for vehicles, bags adapted for bicycles, baskets adapted for bicycles, handlebar grip covers, bicy...