Par brevet d'Invention et de perfectionnement. : Produits d'une nouvelle machine inventée par Ch. Picot a Chalons-sur-Marne,1834-1835.

Application for a patent for a new machine for cutting wood into paper-thin leaves. Pages are actually very thinly sliced wood. The introductory discourse addressed to the King by the chemist Thenard concerning the use of wafer-thin cut wooden leaves used instead of paper as a printing surface; appr...

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