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经营范围
发明名称
étancon pour mines ou travaux analogues
摘要
申请公布号
FR45359(E)
申请公布日期
1935.07.26
申请号
FRD45359
申请日期
1934.10.18
申请人
COMPAGNIE MECO
发明人
分类号
E21D15/54;E21D15/60
主分类号
E21D15/54
代理机构
代理人
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地址
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