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发明名称
摘要
申请公布号
JPS5290957(U)
申请公布日期
1977.07.07
申请号
JP19750177267U
申请日期
1975.12.29
申请人
发明人
分类号
E04H1/12;E03C1/02;E03D11/00;E04B1/343;(IPC1-7):E03C1/02
主分类号
E04H1/12
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