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经营范围
发明名称
Perfectionnements relatifs à des pompes pour sondage profond
摘要
申请公布号
FR920082(A)
申请公布日期
1947.03.26
申请号
FRD920082
申请日期
1946.01.15
申请人
发明人
ELLITSGAARD CHRISTIAN MADSEN
分类号
F04B47/08
主分类号
F04B47/08
代理机构
代理人
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