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发明名称
摘要
申请公布号
SU537953(A1)
申请公布日期
1976.12.05
申请号
SU19742030381
申请日期
1974.06.07
申请人
发明人
分类号
C01B31/00;C01B31/16;(IPC1-7):C01B31/00
主分类号
C01B31/00
代理机构
代理人
主权项
地址
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