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发明名称
摘要
申请公布号
SU392226(A1)
申请公布日期
1973.07.27
申请号
SU19691504277
申请日期
1969.03.27
申请人
发明人
分类号
E05B65/52;(IPC1-7):E05B65/52
主分类号
E05B65/52
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代理人
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