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发明名称
Coupling devices
摘要
申请公布号
US3136366(A)
申请公布日期
1964.06.09
申请号
US19580756552
申请日期
1958.08.22
申请人
BROWN
发明人
BROWN CICERO C.;COCHRAN CHUDLEIGH B.
分类号
E21B17/046;E21B17/06
主分类号
E21B17/046
代理机构
代理人
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地址
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