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发明名称
ORE EXTRACTION
摘要
申请公布号
CA375228(A)
申请公布日期
1938.07.19
申请号
CAD375228
申请日期
申请人
N. V. MAATSCHAPPIJ VOOR ZWAVELZUURBEREIDING VOORHEEN G. T. KETJEN AND CO .
发明人
ADRIAAN CORNELIS VAN ES
分类号
主分类号
代理机构
代理人
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