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发明名称
摘要
申请公布号
JPS57123830(U)
申请公布日期
1982.08.02
申请号
JP19810009256U
申请日期
1981.01.26
申请人
发明人
分类号
E02B7/28;(IPC1-7):E02B7/28
主分类号
E02B7/28
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代理人
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地址
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