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发明名称
摘要
申请公布号
JPH0375231(U)
申请公布日期
1991.07.29
申请号
JP19890135737U
申请日期
1989.11.22
申请人
发明人
分类号
E04F11/16;E04F11/02;E04F11/17;(IPC1-7):E04F11/16
主分类号
E04F11/16
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