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经营范围
发明名称
Perfectionnement à la concentration des minerais de zinc par flottation
摘要
申请公布号
FR67998(E)
申请公布日期
1958.03.26
申请号
FRD67998
申请日期
1955.07.27
申请人
SOCIETE MINIERE & METALLURGIQUE DE PENARROYA
发明人
分类号
B03D1/002
主分类号
B03D1/002
代理机构
代理人
主权项
地址
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