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发明名称
Verfahren zur Förderung von viskosem Erdöl aus Lagerstätten
摘要
申请公布号
AT208800(B)
申请公布日期
1960.04.25
申请号
AT19580008073
申请日期
1958.11.20
申请人
N. V. DE BATAAFSCHE PETROLEUM MAATSCHAPPIJ
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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