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发明名称
Improvements in scouring devices
摘要
申请公布号
GB340438(A)
申请公布日期
1931.01.01
申请号
GB19300004176
申请日期
1930.02.07
申请人
DANIEL JOHN MAYER
发明人
分类号
A47L13/07
主分类号
A47L13/07
代理机构
代理人
主权项
地址
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