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发明名称
摘要
申请公布号
JPS52159003(U)
申请公布日期
1977.12.02
申请号
JP19760069274U
申请日期
1976.05.28
申请人
发明人
分类号
E02F9/28;E02F3/40;E02F3/80;(IPC1-7):E02F3/40
主分类号
E02F9/28
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代理人
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