F41A 21/485
Using screws or bolts
Official title: {using screws or bolts}
F41A21/485 (Using screws or bolts) appears on 93 US grants and 78 published applications in this corpus.
Search patents in F41A- Granted patents
- 93
- Published applications
- 78
- Assignees
- 50
- Inventors
- 116
- Latest grant
- 8 Sep 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 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 1 |
| 2002 | 2 | 0 |
| 2003 | 2 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 4 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 1 | 4 |
| 2010 | 1 | 3 |
| 2011 | 3 | 0 |
| 2012 | 3 | 3 |
| 2013 | 3 | 2 |
| 2014 | 3 | 2 |
| 2015 | 3 | 7 |
| 2016 | 7 | 5 |
| 2017 | 9 | 8 |
| 2018 | 9 | 7 |
| 2019 | 5 | 4 |
| 2020 | 4 | 6 |
| 2021 | 5 | 7 |
| 2022 | 5 | 8 |
| 2023 | 6 | 4 |
| 2024 | 3 | 0 |
| 2025 | 1 | 1 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Handguard with barrel nut locking mechanisms8 Sep 2026US 12,729,930 B2Killer Innovations, Inc.
- Handguard mounting system17 Mar 2026US 12,578,165 B1Aero Precision Inc.
- Assembly of a receiver with a barrel21 Oct 2025US 12,449,221 B2Ceska Zbrojovka A.S.
- Automatic rifle and receiver for same17 Sep 2024US 12,092,417 B2Spuhr I Dalby AB
- Rifle receiver arrangement and a method of assembly of a rifle barrel to said rifle receiver9 Apr 2024US 11,953,281 B2Lightforce Australia Pty Ltd.
- Assembly of a receiver with a barrel4 Sep 2025US 2025/0277644 A1Ceska Zbrojovka A.S.
- A rifle receiver arrangement and a method of assembly of a rifle barrel to said rifle receiver7 Sep 2023US 2023/0280118 A1Lightforce Australia Pty Ltd.
- Handguard with Barrel Nut Locking Mechanisms27 Apr 2023US 2023/0129047 A1Killer Innovations, Inc.
- Monolithic Upper Receiver For Firearms With Barrel Locking System And Foldable Ambidextrous Forward Assist2 Feb 2023US 2023/0035912 A1Strike IP, LLC
- Handguard for clamping mounting on an existing firearm19 Jan 2023US 2023/0020437 A1Glock Technology GmbH
Most cited
By later US patents
- Barrel and receiver assembly93US 5,907,919 ARemington Arms Company, Inc. · 1999
- Firearm especially hunting rifle with exchangeable barrel, and modular system for such a firearm85US 5,228,887 A1993
- Barrel mounting and retention mechanism81US 8,539,708 B2RA Brands, L.L.C. · 2013
- Firearm assembly62US 6,487,805 B1Armalite, Inc. · 2002
- Firearm assembly56US 6,637,142 B1Armalite, Inc. · 2003