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发明名称
摘要
申请公布号
JPS5418853(B2)
申请公布日期
1979.07.11
申请号
JP19740114021
申请日期
1974.10.03
申请人
发明人
分类号
E01C13/00;E01C13/08;E02D31/00
主分类号
E01C13/00
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代理人
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