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发明名称
摘要
申请公布号
JPS57147318(U)
申请公布日期
1982.09.16
申请号
JP19810033069U
申请日期
1981.03.10
申请人
发明人
分类号
E02F3/76;E01H5/06;(IPC1-7):E01H5/06
主分类号
E02F3/76
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代理人
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