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经营范围
发明名称
Pulp bleaching
摘要
申请公布号
US3069309(A)
申请公布日期
1962.12.18
申请号
US19610086553
申请日期
1961.02.01
申请人
E. I. DU PONT DE NEMOURS AND COMPANY
发明人
FENNELL FRANCIS LE ROY
分类号
D21B1/16
主分类号
D21B1/16
代理机构
代理人
主权项
地址
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