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发明名称
摘要
申请公布号
SU406182(A1)
申请公布日期
1973.11.05
申请号
SU19711729216
申请日期
1971.12.27
申请人
发明人
分类号
G03B3/00;(IPC1-7):G03B3/00
主分类号
G03B3/00
代理机构
代理人
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地址
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