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经营范围
发明名称
Holding means for interchangeable cleaning elements
摘要
申请公布号
US2683886(A)
申请公布日期
1954.07.20
申请号
US19500189204
申请日期
1950.10.09
申请人
MATTHEW NEUMANN
发明人
NEUMANN MATTHEW
分类号
A47L13/12
主分类号
A47L13/12
代理机构
代理人
主权项
地址
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