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发明名称
Method for the extraction of underground bituminous deposits
摘要
申请公布号
US3349850(A)
申请公布日期
1967.10.31
申请号
US19650489776
申请日期
1965.08.09
申请人
DEUTSCHE ERDOL-AKTIENGESELLSCHAFT
发明人
SCHLICHT ERIKA MARIE;LANGE HANS
分类号
E21B43/24
主分类号
E21B43/24
代理机构
代理人
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地址
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