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经营范围
发明名称
Bagless vacuum cleaner
摘要
申请公布号
US1954416(A)
申请公布日期
1934.04.10
申请号
US19300488794
申请日期
1930.10.15
申请人
THE QUADREX CORPORATION
发明人
LEATHERS WARD
分类号
A47L9/12
主分类号
A47L9/12
代理机构
代理人
主权项
地址
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