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发明名称
摘要
申请公布号
JPS5612676(B2)
申请公布日期
1981.03.24
申请号
JP19760054753
申请日期
1976.05.12
申请人
发明人
分类号
E21D9/04;E02F5/18;E21D9/08
主分类号
E21D9/04
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代理人
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地址
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