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发明名称
摘要
申请公布号
JPS4725042(U)
申请公布日期
1972.11.21
申请号
JP19710027376U
申请日期
1971.04.09
申请人
发明人
分类号
G02C9/00;(IPC1-7):G02C9/00
主分类号
G02C9/00
代理机构
代理人
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地址
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