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发明名称
摘要
申请公布号
JPS456176(Y1)
申请公布日期
1970.03.27
申请号
JP19650020168U
申请日期
1965.03.16
申请人
发明人
分类号
(IPC1-7):E04G13/02;E04B1/58;F16L9/04;F16L21/08
主分类号
(IPC1-7):E04G13/02
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