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发明名称
摘要
申请公布号
JPS507684(Y1)
申请公布日期
1975.03.07
申请号
JP19720077046U
申请日期
1972.06.29
申请人
发明人
分类号
E02D5/04;E21D9/04;(IPC1-7):E02D5/04;E01G3/00
主分类号
E02D5/04
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代理人
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