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经营范围
发明名称
PERFECTIONNEMENTS AUX INSTALLATIONS DE FORAGE
摘要
申请公布号
BE865953(A1)
申请公布日期
1978.07.31
申请号
BE19780186770
申请日期
1978.04.13
申请人
FORAKY
发明人
分类号
E21B4/18;E21B7/06;E21B7/20;(IPC1-7):E21B/
主分类号
E21B4/18
代理机构
代理人
主权项
地址
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