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发明名称
摘要
申请公布号
JPS639643(Y2)
申请公布日期
1988.03.22
申请号
JP19840024291U
申请日期
1984.02.21
申请人
发明人
分类号
E03B7/10;E03C1/042;(IPC1-7):E03B7/10
主分类号
E03B7/10
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代理人
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