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发明名称
摘要
申请公布号
NL7118172(A)
申请公布日期
1972.07.11
申请号
NL19710018172
申请日期
1971.12.30
申请人
发明人
分类号
E06B3/263;(IPC1-7):E06B3/26
主分类号
E06B3/263
代理机构
代理人
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地址
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