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发明名称
摘要
申请公布号
JPS5335944(Y2)
申请公布日期
1978.09.02
申请号
JP19740089845U
申请日期
1974.07.26
申请人
发明人
分类号
E01D19/00;E01D1/00;E01D101/00;E01D101/40;E04B1/84;E04B1/86;E04C2/34;E04H5/02;(IPC1-7):E04B1/86
主分类号
E01D19/00
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代理人
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