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发明名称
Fluid sealing and burr elimination projectile for perforator guns
摘要
申请公布号
US2672814(A)
申请公布日期
1954.03.23
申请号
US19490120084
申请日期
1949.10.07
申请人
SCHLUMBERGER WELL SURVEYING CORPORATION
发明人
DUBOST PIERRE
分类号
E21B43/116;F42B14/06
主分类号
E21B43/116
代理机构
代理人
主权项
地址
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