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发明名称
摘要
申请公布号
JPS5033327(B2)
申请公布日期
1975.10.29
申请号
JP19720093085
申请日期
1972.09.16
申请人
发明人
分类号
E02B3/18;E02B3/04;E02D5/02;E02D19/04;(IPC1-7):E02D19/04
主分类号
E02B3/18
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