F41A 3/56
The bolt being provided with an additional slidable mass
Official title: the bolt being provided with an additional slidable mass
F41A3/56 (The bolt being provided with an additional slidable mass) appears on 30 US grants and 28 published applications in this corpus.
Search patents in F41A- Granted patents
- 30
- Published applications
- 28
- Assignees
- 11
- Inventors
- 29
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 3 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 2 | 3 |
| 2012 | 3 | 0 |
| 2013 | 1 | 1 |
| 2014 | 1 | 1 |
| 2015 | 1 | 1 |
| 2016 | 0 | 1 |
| 2017 | 1 | 1 |
| 2018 | 0 | 3 |
| 2019 | 3 | 4 |
| 2020 | 4 | 4 |
| 2021 | 4 | 1 |
| 2022 | 0 | 1 |
| 2023 | 3 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Automatic firearms having a bolt assisted by an additional mass20US 3,938,422 A1976
- Firearm with enhanced recoil and control characteristics18US 7,201,094 B2Gamma KDG Systems SA · 2007
- Gun with reduced recoil16US 4,447,975 A1984
- Firearm apparatus and method6US 7,398,614 B22008
- Firearm with enhanced handling by dissipating the effects of recoil and muzzle climb6US 8,286,541 B22012