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发明名称
摘要
申请公布号
JPS5610440(B2)
申请公布日期
1981.03.07
申请号
JP19730093909
申请日期
1973.08.23
申请人
发明人
分类号
E02F7/00;E02F7/04;E21D9/12
主分类号
E02F7/00
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代理人
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地址
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