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发明名称
摘要
申请公布号
DE2048576(A1)
申请公布日期
1971.04.15
申请号
DE19702048576
申请日期
1970.10.02
申请人
发明人
分类号
G03C8/48;(IPC1-7):G03C5/54
主分类号
G03C8/48
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代理人
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地址
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