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经营范围
发明名称
Well packers
摘要
申请公布号
GB606077(A)
申请公布日期
1948.08.05
申请号
GB19460000889
申请日期
1946.01.10
申请人
EDGAR WALLACE MCGAFFEY;CLAUDE COLE TAYLOR
发明人
分类号
E21B33/12
主分类号
E21B33/12
代理机构
代理人
主权项
地址
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