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发明名称
摘要
申请公布号
NL7117625(A)
申请公布日期
1972.06.27
申请号
NL19710017625
申请日期
1971.12.22
申请人
发明人
分类号
E04B2/76;E06B3/98;F16B7/18;F16B12/40;(IPC1-7):E06B3/16;F16B7/04
主分类号
E04B2/76
代理机构
代理人
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