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发明名称
摘要
申请公布号
JPS52149507(U)
申请公布日期
1977.11.12
申请号
JP19760059188U
申请日期
1976.05.10
申请人
发明人
分类号
E02F3/40;(IPC1-7):E02F3/70;E02F3/81
主分类号
E02F3/40
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代理人
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