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经营范围
发明名称
摘要
申请公布号
DD127676(A1)
申请公布日期
1977.10.05
申请号
DD19760194334
申请日期
1976.08.16
申请人
发明人
分类号
B01J29/26;C01B17/76;(IPC1-7):C01B17/76
主分类号
B01J29/26
代理机构
代理人
主权项
地址
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