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发明名称
摘要
申请公布号
PL87540(B1)
申请公布日期
1976.07.31
申请号
PL19740173701
申请日期
1974.08.27
申请人
发明人
分类号
C14C15/00;(IPC1-7):C14C15/00
主分类号
C14C15/00
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代理人
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地址
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