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发明名称
摘要
申请公布号
JPS4854265(U)
申请公布日期
1973.07.12
申请号
JP19710097397U
申请日期
1971.10.20
申请人
发明人
分类号
A47L15/44;D06F39/02;(IPC1-7):D06F39/02
主分类号
A47L15/44
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代理人
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