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发明名称
摘要
申请公布号
NL6507988(A)
申请公布日期
1966.10.24
申请号
NL19650007988
申请日期
1965.06.22
申请人
发明人
分类号
A47L15/23;A47L15/50
主分类号
A47L15/23
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