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发明名称
摘要
申请公布号
JPS52109874(U)
申请公布日期
1977.08.20
申请号
JP19760017057U
申请日期
1976.02.16
申请人
发明人
分类号
A44C5/14;G04B37/00;(IPC1-7):A44C5/14
主分类号
A44C5/14
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