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经营范围
发明名称
Vacuum floor mopper
摘要
申请公布号
US2617138(A)
申请公布日期
1952.11.11
申请号
US19480068604
申请日期
1948.12.31
申请人
发明人
分类号
A47L7/00
主分类号
A47L7/00
代理机构
代理人
主权项
地址
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