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发明名称
摘要
申请公布号
GB1266027(A)
申请公布日期
1972.03.08
申请号
GBD1266027
申请日期
1969.05.07
申请人
发明人
分类号
C21C5/46
主分类号
C21C5/46
代理机构
代理人
主权项
地址
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