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发明名称
Verfahren zum Schwelen oel- und bitumenhaltiger Gesteine
摘要
申请公布号
DE744182(C)
申请公布日期
1944.01.25
申请号
DE1937B180102D
申请日期
1937.09.28
申请人
KARL BERGFELD
发明人
BERGFELD KARL
分类号
C10B53/06
主分类号
C10B53/06
代理机构
代理人
主权项
地址
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