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发明名称
摘要
申请公布号
JP2612804(B2)
申请公布日期
1997.05.21
申请号
JP19930023220
申请日期
1993.01.19
申请人
发明人
分类号
E04G21/14;E04H13/00;(IPC1-7):E04H13/00
主分类号
E04G21/14
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