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发明名称
摘要
申请公布号
DE2061468(A1)
申请公布日期
1972.06.29
申请号
DE19702061468
申请日期
1970.12.14
申请人
发明人
分类号
G03B7/06
主分类号
G03B7/06
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代理人
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地址
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