| http://www.w3.org/ns/prov#value | - The art of making brous sheet materials as presently practiced comprises the reduction of lignocellulosic materials to a brous condition and the rendering of the same to a plastic state in the presence-of hot water or steam, by means of equipment and processes such as disclosed, for example, in the patents to Asplund 2,008,892, July 23, 1935, and 2,145,851, February 7, 1939, or in the patents to M
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