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发明名称
摘要
申请公布号
JPS4970709(U)
申请公布日期
1974.06.19
申请号
JP19720103572U
申请日期
1972.09.04
申请人
发明人
分类号
E04B1/684;E04B1/66;E04B1/68;E04B2/88;E04B2/90;(IPC1-7):E04B1/66
主分类号
E04B1/684
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