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经营范围
发明名称
Procédé d'exploitation de schistes bitumineux par pyrogénation
摘要
申请公布号
FR906938(A)
申请公布日期
1946.02.25
申请号
FRD906938
申请日期
1944.09.13
申请人
KOHLE-OEL-UNION VON BUSSE KOMMANDIT-GESELLSCHAFT
发明人
分类号
E21B43/243;E21B43/295
主分类号
E21B43/243
代理机构
代理人
主权项
地址
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