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发明名称
摘要
申请公布号
PL87014(B1)
申请公布日期
1976.06.30
申请号
PL19740174074
申请日期
1974.09.13
申请人
发明人
分类号
C04B33/22;(IPC1-7):C04B33/22
主分类号
C04B33/22
代理机构
代理人
主权项
地址
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