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发明名称
摘要
申请公布号
JPS64614(U)
申请公布日期
1989.01.05
申请号
JP19870092741U
申请日期
1987.06.18
申请人
发明人
分类号
A63B71/02;E01F13/00;E04H17/22;(IPC1-7):E01F13/00
主分类号
A63B71/02
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代理人
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