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发明名称
摘要
申请公布号
DE2012262(A1)
申请公布日期
1970.10.22
申请号
DE19702012262
申请日期
1970.03.14
申请人
发明人
分类号
G02C5/22;(IPC1-7):02C5/16
主分类号
G02C5/22
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