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经营范围
发明名称
Concentration de minerais de plomb, de zinc, d'argent
摘要
申请公布号
FR721325(A)
申请公布日期
1932.03.02
申请号
FRD721325
申请日期
1931.08.13
申请人
NORTH BROKEN HILL LTD
发明人
分类号
B03D1/004
主分类号
B03D1/004
代理机构
代理人
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