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发明名称
Improvements in and relating to the treatment of substances containing tantalum and/or niobium
摘要
申请公布号
GB489742(A)
申请公布日期
1938.08.03
申请号
GB19370008333
申请日期
1937.03.22
申请人
SOCIETE GENERALE METALLURGIQUE DE HOBOKEN
发明人
分类号
C22B34/24
主分类号
C22B34/24
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