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发明名称
摘要
申请公布号
JPS472622(U)
申请公布日期
1972.08.30
申请号
JP19710001898U
申请日期
1971.01.22
申请人
发明人
分类号
E04F21/16;(IPC1-7):E04F21/16
主分类号
E04F21/16
代理机构
代理人
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地址
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