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发明名称
Storm choke
摘要
申请公布号
US3045760(A)
申请公布日期
1962.07.24
申请号
US19580774300
申请日期
1958.11.17
申请人
CAMCO, INCORPORATED
发明人
JR. HOWARD H. MOORE,
分类号
E21B34/08
主分类号
E21B34/08
代理机构
代理人
主权项
地址
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