发明授权
- 专利标题: Vacuum-cleaner.
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申请号: US1912686527申请日: 1912-03-27
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公开(公告)号: US1084971A公开(公告)日: 1914-01-20
- 发明人: SMITH ROBERT R
- 申请人: MILLER LOCK COMPANY
- 专利权人: Miller Lock Company
- 当前专利权人: Miller Lock Company
- 优先权: US1912670208 1912-01-09; US1912686527 1912-03-27
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