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Louis-Marie Hilaire Bernigaud de Grange, Count (Comte) de Chardonnet (1 May 1839 - 11 March 1924) was a French engineer and industrialist from Besançon, and inventor of artificial silk.

In the late 1870s, Chardonnet was working with Louis Pasteur on a remedy to the epidemic that was destroying French silkworms.

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