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经营范围
发明名称
VALVED TUBING HANGER
摘要
申请公布号
CA694743(A)
申请公布日期
1964.09.22
申请号
CAD694743
申请日期
申请人
RECTOR WELL EQUIPMENT COMPANY
发明人
LAURENCE L. RECTOR
分类号
主分类号
代理机构
代理人
主权项
地址
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