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Georg Franz August Graf von Buquoy Czech pronunciation (help·info) (Czech: Jiří František August Buqouy) (1781–1851) was a Bohemian aristocrat, mathematician, and inventor. He studied mathematics, natural science, philosophy, and economics at the Prague and Vienna universities. In 1810 he constructed an early steam engine. Most of all, he was engaged in the glass works in Nové Hrady region. On the basis of many experiments he succeeded in inventing an original process technology of a black opaque glass called hyalite (1817), as well as completing the production process for red hyalite (1819).