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发明名称
Drive for floor cleaning machines
摘要
申请公布号
US2441537(A)
申请公布日期
1948.05.11
申请号
US19380203142
申请日期
1938.04.20
申请人
JOHN SIMON LOUIS
发明人
SIMON LOUIS JOHN
分类号
A47L11/29
主分类号
A47L11/29
代理机构
代理人
主权项
地址
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