A47L 9/2878
Dual-powered vacuum cleaners, i.e. devices which can be operated with mains power
Official title: {Dual-powered vacuum cleaners, i.e. devices which can be operated with mains power supply or by batteries}
A47L9/2878 (Dual-powered vacuum cleaners, i.e. devices which can be operated with mains power) appears on 114 US grants and 156 published applications in this corpus.
Search patents in A47L- Granted patents
- 114
- Published applications
- 156
- Assignees
- 47
- Inventors
- 218
- Latest grant
- 24 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 3 |
| 2003 | 2 | 1 |
| 2004 | 0 | 3 |
| 2005 | 2 | 3 |
| 2006 | 0 | 2 |
| 2007 | 2 | 6 |
| 2008 | 3 | 8 |
| 2009 | 1 | 1 |
| 2010 | 2 | 3 |
| 2011 | 6 | 3 |
| 2012 | 1 | 3 |
| 2013 | 3 | 2 |
| 2014 | 2 | 4 |
| 2015 | 2 | 4 |
| 2016 | 4 | 8 |
| 2017 | 2 | 7 |
| 2018 | 6 | 18 |
| 2019 | 12 | 23 |
| 2020 | 13 | 13 |
| 2021 | 12 | 6 |
| 2022 | 12 | 9 |
| 2023 | 8 | 8 |
| 2024 | 11 | 9 |
| 2025 | 2 | 7 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Vacuum cleaner with detachable vacuum module160US 7,377,007 B2BISSELL Homecare, Inc. · 2008
- Automatic charging system and method of robot cleaner144US 6,859,010 B2LG Electronics Inc. · 2005
- Multi-purpose position sensitive floor cleaning device129US 6,572,711 B2The Hoover Company · 2003
- Corded/cordless dual-mode power-operated device108US 4,835,409 ABlack & Decker Inc. · 1989
- Surface cleaning apparatus95US 9,204,773 B2Omachron Intellectual Property Inc. · 2015