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经营范围
发明名称
Method of excavating
摘要
申请公布号
US3106068(A)
申请公布日期
1963.10.08
申请号
US19590807421
申请日期
1959.04.20
申请人
EISENWERK-GESELLSCHAFT MAXIMILIANSHUTTE A. G.
发明人
BECKENBAUER FRANZ;OULEHLA FERDINAND
分类号
E02D23/10;E21B7/18
主分类号
E02D23/10
代理机构
代理人
主权项
地址
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