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发明名称
METHOD AND APPARATUS FOR PRODUCING AN OIL WELL
摘要
申请公布号
CA539795(A)
申请公布日期
1957.04.23
申请号
CAD539795
申请日期
申请人
RALPH SPEAROW
发明人
RALPH SPEAROW
分类号
主分类号
代理机构
代理人
主权项
地址
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