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发明名称
摘要
申请公布号
JPS5621874(Y2)
申请公布日期
1981.05.22
申请号
JP19750166757U
申请日期
1975.12.09
申请人
发明人
分类号
E02D3/12;(IPC1-7):E02D3/12
主分类号
E02D3/12
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代理人
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