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发明名称
摘要
申请公布号
JPH0348050(U)
申请公布日期
1991.05.08
申请号
JP19890109734U
申请日期
1989.09.20
申请人
发明人
分类号
E04F21/165;E04B1/68;E04B1/684;(IPC1-7):E04F21/165
主分类号
E04F21/165
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