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Synthetic

1971 Berkeley chemists announces 1st synthetic growth hormones 1959 De Beers firm of South Africa announces synthetic diamond 1948 1st use of synthetic rubber in asphaltic concrete, Akron, Ohio 1943 Manufacturers get permission to use synthetic rubber for baseball core 1940 1st synthetic rubber tire exhibited Akron Oh 1940 The synthetic rubber tire unveiled 1938 DuPont announces its new synthetic fiber will be called "nylon" 1938 Du Pont named its new synthetic fiber "nylon" 1933 1st synthetic detergent, "Dreft" by Procter and Gamble, goes on sale 1931 1st commercially produced synthetic rubber manufactured 1931 Dupont introduces synthetic rubber 1930 Synthetic rubber 1st produced

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