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经营范围
发明名称
Manufacture of paper pulp
摘要
申请公布号
US2049567(A)
申请公布日期
1936.08.04
申请号
US19340729154
申请日期
1934.06.05
申请人
E. I. DU PONT DE NEMOURS & COMPANY
发明人
LARSON LOUIS LEONARD;SCHWARTZ GEORGE LEWIS
分类号
D21C3/22
主分类号
D21C3/22
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代理人
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