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发明名称
摘要
申请公布号
JPH021746(U)
申请公布日期
1990.01.08
申请号
JP19880080366U
申请日期
1988.06.17
申请人
发明人
分类号
G03B42/02;(IPC1-7):G03B42/02
主分类号
G03B42/02
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代理人
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地址
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