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发明名称
摘要
申请公布号
JPS52157230(U)
申请公布日期
1977.11.29
申请号
JP19760066844U
申请日期
1976.05.24
申请人
发明人
分类号
E04F13/06;(IPC1-7):E04F13/06
主分类号
E04F13/06
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代理人
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