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Charles Goodyear Vulcanized Solid Rubber Ball In the 19th century, two groundbreaking inventions laid the foundation for modern lawn tennis: Charles Goodyear's vulcanization of rubber and Edwin Budding's creation of the mechanical lawn mower. In 1839 , Charles Goodyear discovered that heating natural rubber with sulfur transformed it into a durable, elastic material, a process he patented in 1844 as vulcanization . This innovation revolutionized the production of rubber good