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发明名称
Floor polishing device
摘要
申请公布号
US2247956(A)
申请公布日期
1941.07.01
申请号
US19400312646
申请日期
1940.01.06
申请人
MANDEL MORRIS J
发明人
MANDEL MORRIS J.
分类号
A47L13/312
主分类号
A47L13/312
代理机构
代理人
主权项
地址
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