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发明名称
摘要
申请公布号
JPS5246035(U)
申请公布日期
1977.04.01
申请号
JP19750133474U
申请日期
1975.09.29
申请人
发明人
分类号
E01C11/24;E01C5/06;E01F1/00;E01F9/00;E01F9/04;E01F9/08;(IPC1-7):E01C5/06
主分类号
E01C11/24
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代理人
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