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发明名称
PRODUCTION OF EARTH METAL COMPOUNDS
摘要
申请公布号
CA298904(A)
申请公布日期
1930.04.01
申请号
CAD298904
申请日期
申请人
FRIED. KRUPP GRUSONWERK AKTIENGESELLSCHAFT
发明人
FRIEDRICH JOHANNSEN
分类号
主分类号
代理机构
代理人
主权项
地址
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