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经营范围
发明名称
Tool for perforating wells
摘要
申请公布号
US2891623(A)
申请公布日期
1959.06.23
申请号
US19560619166
申请日期
1956.10.30
申请人
REINALDO BOSS
发明人
BOSS REINALDO
分类号
E21B43/08
主分类号
E21B43/08
代理机构
代理人
主权项
地址
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