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发明名称
摘要
申请公布号
JPH0245285(Y2)
申请公布日期
1990.11.30
申请号
JP19850024133U
申请日期
1985.02.20
申请人
发明人
分类号
E01C23/00;E01C23/12;E01C23/14;F17C13/08;(IPC1-7):E01C23/14
主分类号
E01C23/00
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