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发明名称
摘要
申请公布号
JPS5636971(Y2)
申请公布日期
1981.08.31
申请号
JP19760021182U
申请日期
1976.02.25
申请人
发明人
分类号
E04H17/16;E01B19/00;E01C1/00;E01F8/00;E04B1/82;E04B1/84;E04B1/98;E04H17/14;(IPC1-7):E01F8/00
主分类号
E04H17/16
代理机构
代理人
主权项
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