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发明名称
Perfectionnement à la circulation de fluides dans les conduites, et aux ventilateurs assurant cette circulation
摘要
申请公布号
FR932590(A)
申请公布日期
1948.03.25
申请号
FRD932590
申请日期
1946.08.22
申请人
THE MINING ENGINEERING COMPANY LIMITED
发明人
NYBORG TAGE GEORG
分类号
E21F1/08;F04D29/52
主分类号
E21F1/08
代理机构
代理人
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