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发明名称
摘要
申请公布号
JPS641397(Y2)
申请公布日期
1989.01.12
申请号
JP19830072479U
申请日期
1983.05.17
申请人
发明人
分类号
E04G21/32;E04G5/00;(IPC1-7):E04G1/26
主分类号
E04G21/32
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代理人
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