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发明名称
Gun perforator
摘要
申请公布号
US2288931(A)
申请公布日期
1942.07.07
申请号
US19410404961
申请日期
1941.08.01
申请人
LANE-WELLS COMPANY
发明人
ZSCHOKKE ARTHUR J.
分类号
E21B43/116
主分类号
E21B43/116
代理机构
代理人
主权项
地址
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