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发明名称
Control means for oil well tools
摘要
申请公布号
US2738016(A)
申请公布日期
1956.03.13
申请号
US19530334025
申请日期
1953.01.29
申请人
OIL RECOVERY CORPORATION
发明人
LYNES JOHN
分类号
E21B33/124;E21B33/128
主分类号
E21B33/124
代理机构
代理人
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地址
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