发明名称 |
Vacuum nozzle for carpeted stair treads and risers |
摘要 |
A suction nozzle is provided which is comprised of a one piece outer cylindrical body member of predetermined fixed dimensions provided with an internal movable sleeve for adapting the nozzle to effectively and more conveniently extract dirt from carpeted stair treads or riser without changing the dimensions of the nozzle.
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申请公布号 |
US4374446(A) |
申请公布日期 |
1983.02.22 |
申请号 |
US19810250563 |
申请日期 |
1981.04.03 |
申请人 |
CERTIFIED CHEMICAL & EQUIPMENT CO. |
发明人 |
COPPERMAN, MARCUS |
分类号 |
A47L9/02;(IPC1-7):A47L9/06 |
主分类号 |
A47L9/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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