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Trevor Graham Baylis CBE (born 13 May 1937) is an English inventor. He is best known for inventing the wind-up radio. Rather than using batteries or external electrical source, the radio is powered by the user winding a crank for several seconds. This stores energy in a spring which then drives an electrical generator to operate the radio receiver. He invented it in response to the need to communicate information about AIDS to the people of Africa. He runs Trevor Baylis Brands plc, a company dedicated to helping inventors to develop and protect their ideas and to find a route to market.