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经营范围
发明名称
Improvements in or relating to the washing of solid materials in granular or like form
摘要
申请公布号
GB511973(A)
申请公布日期
1939.08.28
申请号
GB19380006297
申请日期
1938.02.28
申请人
E. I. DU PONT DE NEMOURS AND CO.
发明人
分类号
B03B5/36;B03B11/00
主分类号
B03B5/36
代理机构
代理人
主权项
地址
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