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发明名称
PROCESS FOR REFINING CARBONACEOUS MATERIALS
摘要
申请公布号
CA510552(A)
申请公布日期
1955.03.01
申请号
CAD510552
申请日期
申请人
SHELL DEVELOPMENT COMPANY
发明人
HAN HOOG
分类号
主分类号
代理机构
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