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发明名称
摘要
申请公布号
JPS56153932(U)
申请公布日期
1981.11.17
申请号
JP19800178651U
申请日期
1980.12.12
申请人
发明人
分类号
G03B27/32;(IPC1-7):G03B27/32
主分类号
G03B27/32
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代理人
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