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经营范围
发明名称
Apparatus for recovering combustible substances from subterraneous deposits in situ
摘要
申请公布号
US2890754(A)
申请公布日期
1959.06.16
申请号
US19540401971
申请日期
1954.01.04
申请人
SVENSKA SKIFFEROLJE AKTIEBOLAGET;HUSKY OIL COMPANY
发明人
HOFFSTROM NILS AKE;EURENIUS MALTE OSCAR
分类号
E21B36/02
主分类号
E21B36/02
代理机构
代理人
主权项
地址
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