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经营范围
发明名称
Flotation process
摘要
申请公布号
US2112362(A)
申请公布日期
1938.03.29
申请号
US19340725342
申请日期
1934.05.12
申请人
E. I. DU PONT DE NEMOURS & COMPANY
发明人
GILLSON JOSEPH LINCOLN;JR. CHARLES TITUS MENTZER,
分类号
B03D1/004
主分类号
B03D1/004
代理机构
代理人
主权项
地址
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