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发明名称
摘要
申请公布号
JPS6237867(Y2)
申请公布日期
1987.09.28
申请号
JP19780111710U
申请日期
1978.08.14
申请人
发明人
分类号
E03F5/20;E03F3/02;E03F5/10;E04D13/064;E04D13/08;(IPC1-7):E04D13/06
主分类号
E03F5/20
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