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发明名称
摘要
申请公布号
DE2104052(A1)
申请公布日期
1971.08.05
申请号
DE19712104052
申请日期
1971.01.28
申请人
WESTERN ELECTRIC CO
发明人
分类号
G02B7/28;G03B3/04;(IPC1-7):G03B3/00
主分类号
G02B7/28
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