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发明名称
摘要
申请公布号
GB1302922(A)
申请公布日期
1973.01.10
申请号
GB19700003673
申请日期
1970.01.26
申请人
发明人
分类号
G03G15/26;G03G21/00;(IPC1-7):G03G15/08
主分类号
G03G15/26
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代理人
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