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发明名称
摘要
申请公布号
JPS5571704(U)
申请公布日期
1980.05.17
申请号
JP19780155595U
申请日期
1978.11.09
申请人
发明人
分类号
E01C11/22;(IPC1-7):E01C11/22
主分类号
E01C11/22
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代理人
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