发明授权
US2499655A Combination brush spacer and support for rotatable pipe cleaning machine brushes
失效
组合刷间隔件和可旋转管道清洁机刷的支撑
- 专利标题: Combination brush spacer and support for rotatable pipe cleaning machine brushes
- 专利标题(中): 组合刷间隔件和可旋转管道清洁机刷的支撑
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申请号: US67397946申请日: 1946-06-03
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公开(公告)号: US2499655A公开(公告)日: 1950-03-07
- 发明人: LAURENT MILTON P
- 申请人: LAURENT MILTON P
- 专利权人: Milton P Laurent
- 当前专利权人: Milton P Laurent
- 优先权: US67397946 1946-06-03
- 主分类号: A46B13/00
- IPC分类号: A46B13/00 ; B08B9/023
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