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发明名称
摘要
申请公布号
JPS4715441(U)
申请公布日期
1972.10.23
申请号
JP19710019790U
申请日期
1971.03.22
申请人
发明人
分类号
E04H1/12;G07F9/10;(IPC1-7):E04H1/12
主分类号
E04H1/12
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代理人
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