Vacuum cleaning appliance
US4593429A · kind A · utility
109Cited by
24References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 14, 1984 |
| Grant date | Jun 10, 1986 |
| Priority date | — |
| Expiry date | Aug 14, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S55/03
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A vacuum cleaning appliance comprises a lower efficiency cyclone unit and a high efficiency cyclone unit connected in series. This enables both large and fine dirt particles to be dealt with.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.