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发明名称
Perfectionnements aux machines pour flottation d'écume de minéraux
摘要
申请公布号
FR862092(A)
申请公布日期
1941.02.26
申请号
FRD862092
申请日期
1939.12.04
申请人
发明人
PETERSEN LOUIS STEFFEN
分类号
B03D1/16
主分类号
B03D1/16
代理机构
代理人
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地址
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