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发明名称
摘要
申请公布号
DD124688(A1)
申请公布日期
1977.03.09
申请号
DD19760191095
申请日期
1976.02.04
申请人
发明人
分类号
G03C1/72;G03C1/76;G03C5/38;(IPC1-7):G03C1/72
主分类号
G03C1/72
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代理人
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