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发明名称
摘要
申请公布号
JPS55143319(U)
申请公布日期
1980.10.14
申请号
JP19790043003U
申请日期
1979.03.31
申请人
发明人
分类号
G02B6/04;E04C2/54;(IPC1-7):E04C2/54;G02B5/16
主分类号
G02B6/04
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