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发明名称
摘要
申请公布号
JPS4711709(U)
申请公布日期
1972.10.12
申请号
JP19710013328U
申请日期
1971.03.02
申请人
发明人
分类号
E04B1/66;E04B1/64;(IPC1-7):E04B1/64
主分类号
E04B1/66
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代理人
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