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发明名称
摘要
申请公布号
NL7017094(A)
申请公布日期
1971.05.26
申请号
NL19700017094
申请日期
1970.11.23
申请人
发明人
分类号
E06B9/307
主分类号
E06B9/307
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代理人
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