A47L 5/34
With height adjustment of nozzles or dust-loosening tools
Official title: with height adjustment of nozzles or dust-loosening tools
A47L5/34 (With height adjustment of nozzles or dust-loosening tools) appears on 200 US grants and 159 published applications in this corpus.
Search patents in A47L- Granted patents
- 200
- Published applications
- 159
- Assignees
- 76
- Inventors
- 339
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 4 | 0 |
| 2000 | 7 | 0 |
| 2001 | 8 | 0 |
| 2002 | 1 | 3 |
| 2003 | 3 | 5 |
| 2004 | 3 | 9 |
| 2005 | 3 | 7 |
| 2006 | 2 | 11 |
| 2007 | 9 | 10 |
| 2008 | 12 | 10 |
| 2009 | 3 | 10 |
| 2010 | 8 | 9 |
| 2011 | 10 | 7 |
| 2012 | 4 | 2 |
| 2013 | 6 | 4 |
| 2014 | 11 | 5 |
| 2015 | 5 | 3 |
| 2016 | 3 | 1 |
| 2017 | 6 | 18 |
| 2018 | 3 | 8 |
| 2019 | 12 | 5 |
| 2020 | 8 | 4 |
| 2021 | 3 | 8 |
| 2022 | 3 | 3 |
| 2023 | 4 | 3 |
| 2024 | 6 | 5 |
| 2025 | 4 | 3 |
| 2026 | 2 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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Most cited
By later US patents
- Autonomous floor-cleaning robot453US 6,883,201 B2iRobot Corporation · 2005
- Autonomous floor cleaning robot349US 7,636,982 B2iRobot Corporation · 2009
- Autonomous floor-cleaning robot331US 7,571,511 B2iRobot Corporation · 2009
- Autonomous floor cleaning robot322US 7,448,113 B2iRobert Corporation · 2008
- Cleaner head for a vacuum cleaner232US 6,581,239 B1Dyson Limited · 2003