A01D 34/44
With two or more cutters
Official title: with two or more cutters
A01D34/44 (With two or more cutters) appears on 102 US grants and 104 published applications in this corpus.
Search patents in A01D- Granted patents
- 102
- Published applications
- 104
- Assignees
- 35
- Inventors
- 213
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 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 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 2 |
| 2009 | 3 | 4 |
| 2010 | 1 | 2 |
| 2011 | 1 | 3 |
| 2012 | 3 | 1 |
| 2013 | 4 | 4 |
| 2014 | 3 | 7 |
| 2015 | 3 | 5 |
| 2016 | 5 | 9 |
| 2017 | 7 | 6 |
| 2018 | 8 | 11 |
| 2019 | 5 | 7 |
| 2020 | 5 | 6 |
| 2021 | 8 | 13 |
| 2022 | 6 | 7 |
| 2023 | 6 | 2 |
| 2024 | 7 | 5 |
| 2025 | 4 | 4 |
| 2026 | 4 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Automatic calibration of individual wheel hub motor speed in traction systems15 Sep 2026US 12,733,570 B2Marlin Technologies, Inc.
- All-electric reel-type turf vehicle1 Sep 2026US 12,721,258 B2Textron Innovations Inc.
- Configurable lift actuator for lawn mower cutting unit7 Jul 2026US 12,672,603 B2Textron Inc.
- Radial frequency of clip control system20 Jan 2026US 12,527,251 B2Deere & Company
- Radial differential speed control system11 Nov 2025US 12,466,480 B2Deere & Company
- Mower control for sequenced patch cleanup6 Aug 2026US 2026/0223773 A1Deere & Company
- Distance-based front-to-rear timing on mower cutting units23 Jul 2026US 2026/0206679 A1Deere & Company
- Grass clearing system30 Apr 2026US 2026/0114377 A1Textron Inc.
- Mower cutting unit lift system29 Jan 2026US 2026/0026432 A1Deere & Company
- Robotic weed control apparatus and method15 Jan 2026US 2026/0013490 A1Greenfield Robotics Corporation
Most cited
By later US patents
- Electric drive riding greens mower142US 5,406,778 ARansomes America Corporation · 1995
- Removable battery tray system for an electrically powered mower85US 5,934,053 A1999
- Control system for electric drive riding mower83US 5,540,037 ARansomes America Corporation · 1996
- Electric drive riding mower82US 7,610,975 B1The Toro Company · 2009
- Riding lawnmower vehicle70US 8,191,342 B2Kanzaki Kokyukoki Manufacturing Co., Ltd. · 2012