Method of treating chemical pulf
United States Patent 1951017

Inventors:
Hatch, Raymond S.
Publication Date:
03/13/1934
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Assignee:
WEYERHAEUSER TIMBER COMPANY
Primary Class:
162/55
Other Classes:
162/87, 209/17
International Classes:
B01D29/01; D21D5/04; D21D5/00