Gårdagens uppfinning var Kevlar och upptäcktes/uppfanns av kemisten Stephanie Kwolek. Rätt årtal var svårt att veta exakt eftersom tillverkaren säger 1965, och wiki säger både 1964 och 1965 såväl som 1966. Jag ger rätt för de tre åren.
Alltså. Kevlar – Stephanie Kwolek – 1964, 1965 eller 1966.
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