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发明名称
摘要
申请公布号
JPS5498217(U)
申请公布日期
1979.07.11
申请号
JP19770173713U
申请日期
1977.12.22
申请人
发明人
分类号
G03B27/54;G03G15/04;(IPC1-7):G03B27/54
主分类号
G03B27/54
代理机构
代理人
主权项
地址
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