F41A 3/68
Bolt stops, i.e. means for limiting bolt opening movement
F41A3/68 (Bolt stops, i.e. means for limiting bolt opening movement) appears on 77 US grants and 63 published applications in this corpus.
Search patents in F41A- Granted patents
- 77
- Published applications
- 63
- Assignees
- 32
- Inventors
- 88
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 1 |
| 2006 | 0 | 2 |
| 2007 | 1 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 1 | 1 |
| 2012 | 0 | 0 |
| 2013 | 2 | 2 |
| 2014 | 3 | 4 |
| 2015 | 5 | 4 |
| 2016 | 6 | 5 |
| 2017 | 4 | 8 |
| 2018 | 4 | 4 |
| 2019 | 7 | 4 |
| 2020 | 4 | 4 |
| 2021 | 6 | 6 |
| 2022 | 6 | 4 |
| 2023 | 5 | 7 |
| 2024 | 6 | 4 |
| 2025 | 2 | 2 |
| 2026 | 3 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Ambidextrous bolt release mechanism for firearm25 Aug 2026US 12,716,669 B2Sturm, Ruger & Company, Inc.
- Ambidextrous bolt release mechanism for firearm7 Apr 2026US 12,595,982 B2Sturm, Ruger & Company, Inc.
- Bolt stop actuator for use in a firearm27 Jan 2026US 12,535,282 B2Diamondback Firearms LLC
- Ambidextrous firearm controls27 May 2025US 12,313,366 B2WHG Properties, LLC
- Non-semiautomatic receiver compatible with AR15/10 line of components, parts and accessories25 Feb 2025US 12,235,064 B2
- Ambidextrous bolt release mechanism for firearm6 Nov 2025US 2025/0341372 A1Sturm, Ruger & Company, Inc.
- Ambidextrous firearm controls21 Aug 2025US 2025/0264293 A1WHG Properties, LLC
- Ambidextrous bolt release mechanism for firearm31 Oct 2024US 2024/0361093 A1Sturm, Ruger & Company, Inc.
- Ambidextrous firearm controls5 Sep 2024US 2024/0295379 A1WHG Properties, LLC
- Bolt stop actuator for use in a firearm11 Jul 2024US 2024/0230258 A1Diamondback Firearms LLC
Most cited
By later US patents
- Bolt action for repeating rifle78US 3,979,849 A1976
- Ambidextrous rifle bolt stop release67US 8,359,966 B12013
- Bolt hold open actuator for use with AR-15/M16 type firearms36US 9,091,499 B222 Evolution LLC · 2015
- Firearm with an improved breech bolt assembly31US 7,849,777 B1Fabbrica D'Armi Pietro Beretta S.p.A. · 2010
- Blowback bolt upper receiver and barrel assembly29US 8,464,453 B1Nordic Components · 2013