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经营范围
发明名称
Process for secondary recovery from oil wells
摘要
申请公布号
US2115378(A)
申请公布日期
1938.04.26
申请号
US19370123596
申请日期
1937.02.02
申请人
ARNOLD R. HANSON;S. WILLNER HANSON
发明人
WOLF HARRY COMER
分类号
E21B43/18
主分类号
E21B43/18
代理机构
代理人
主权项
地址
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