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发明名称
Vacuum cleaner
摘要
申请公布号
US1993231(A)
申请公布日期
1935.03.05
申请号
US19300470279
申请日期
1930.07.24
申请人
TUNSTALL WILLIAM B
发明人
TUNSTALL WILLIAM B.
分类号
A47L9/20
主分类号
A47L9/20
代理机构
代理人
主权项
地址
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