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发明名称
摘要
申请公布号
GB1229935(A)
申请公布日期
1971.04.28
申请号
GBD1229935
申请日期
1968.09.19
申请人
发明人
分类号
G03C1/705;G03C5/58;H05K3/10;H05K3/18
主分类号
G03C1/705
代理机构
代理人
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