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发明名称
摘要
申请公布号
NL6413092(A)
申请公布日期
1965.05.14
申请号
NL19640013092
申请日期
1964.11.10
申请人
发明人
分类号
G02B15/14;G03B19/18
主分类号
G02B15/14
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