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发明名称
摘要
申请公布号
JPH02139229(U)
申请公布日期
1990.11.21
申请号
JP19890048032U
申请日期
1989.04.24
申请人
发明人
分类号
E04B9/22;(IPC1-7):E04B9/22;E04B5/57
主分类号
E04B9/22
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