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发明名称
摘要
申请公布号
JPH0477121(U)
申请公布日期
1992.07.06
申请号
JP19900121718U
申请日期
1990.11.20
申请人
发明人
分类号
G02B27/22;(IPC1-7):G02B27/22
主分类号
G02B27/22
代理机构
代理人
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地址
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