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经营范围
发明名称
摘要
申请公布号
SU353469(A1)
申请公布日期
1972.12.25
申请号
SU19711623516
申请日期
1971.02.23
申请人
发明人
分类号
C30B7/02;(IPC1-7):B01J17/04
主分类号
C30B7/02
代理机构
代理人
主权项
地址
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