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发明名称
摘要
申请公布号
SU361991(A1)
申请公布日期
1972.12.13
申请号
SU19711621979
申请日期
1971.02.08
申请人
发明人
分类号
C04B28/02;C04B24/26;(IPC1-7):C04B25/00
主分类号
C04B28/02
代理机构
代理人
主权项
地址
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