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发明名称
摘要
申请公布号
JPS438350(Y1)
申请公布日期
1968.04.13
申请号
JP19660011076U
申请日期
1966.02.11
申请人
发明人
分类号
E01F9/619;E01F9/615;E01F9/669
主分类号
E01F9/619
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代理人
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