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发明名称
摘要
申请公布号
JPS4727503(U)
申请公布日期
1972.11.28
申请号
JP19710029589U
申请日期
1971.04.19
申请人
发明人
分类号
E02F9/26;(IPC1-7):E02F9/26
主分类号
E02F9/26
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代理人
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