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发明名称
Perfectionnement aux pompes pour puits profonds
摘要
申请公布号
FR991227(A)
申请公布日期
1951.10.03
申请号
FRD991227
申请日期
1949.05.12
申请人
发明人
GUINARD PAUL-ANDRE
分类号
F04D29/60
主分类号
F04D29/60
代理机构
代理人
主权项
地址
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