A01D 34/4167
Protection devices
Official title: {Protection devices}
A01D34/4167 (Protection devices) appears on 69 US grants and 75 published applications in this corpus.
Search patents in A01D- Granted patents
- 69
- Published applications
- 75
- Assignees
- 37
- Inventors
- 149
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 1 |
| 2002 | 0 | 3 |
| 2003 | 3 | 1 |
| 2004 | 0 | 1 |
| 2005 | 4 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 3 |
| 2012 | 0 | 3 |
| 2013 | 1 | 2 |
| 2014 | 2 | 1 |
| 2015 | 0 | 6 |
| 2016 | 3 | 3 |
| 2017 | 2 | 8 |
| 2018 | 5 | 9 |
| 2019 | 4 | 1 |
| 2020 | 6 | 5 |
| 2021 | 2 | 1 |
| 2022 | 2 | 3 |
| 2023 | 1 | 7 |
| 2024 | 2 | 4 |
| 2025 | 7 | 10 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Trimmer head9 Jun 2026US 12,648,518 B2T&I Consulting AB
- String trimmer head24 Mar 2026US 12,582,029 B2Milwaukee Electric Tool Corporation
- Lawn trimmer9 Dec 2025US 12,490,672 B2Gliding Innovations Ltd.
- Integrated trimmer for a lawn mower2 Dec 2025US 12,484,475 B2
- Deck mountable string trimmer attachment assembly2 Dec 2025US 12,484,476 B2Trimyxs, LLC
- Heads for string trimmers and mowers1 Jan 2026US 2026/0000014 A1Ardisam, Inc.
- Edge trimming tool assembly and power tool2 Oct 2025US 2025/0301959 A1Husqvarna AB
- Riding Lawn Mower Lawn Trimmer Attachment21 Aug 2025US 2025/0261590 A1
- Shield and attachment for weed trimming3 Jul 2025US 2025/0212721 A1Vista Studios, Inc.
- Weed trimmer apparatus and system19 Jun 2025US 2025/0194464 A1
Most cited
By later US patents
- Grass trimmer attachment54US 5,092,112 A1992
- Wheel mounted string trimmer47US 4,936,886 ASnapper Power Equipment Division of Fuqua Indistries, Inc. · 1990
- Line guard for a line cutting type weed trimmer46US 4,651,422 APiston Powered Products, Inc. · 1987
- Whip type weed cutter32US 5,048,187 A1991
- Line cutter with edging attachment28US 4,756,148 ANylon Line Cutters (Pty.) Ltd. · 1988