F41A 9/37
Feeding two or more kinds of ammunition to the same gun
Official title: Feeding two or more kinds of ammunition to the same gun; Feeding from two sides
F41A9/37 (Feeding two or more kinds of ammunition to the same gun) appears on 153 US grants and 87 published applications in this corpus.
Search patents in F41A- Granted patents
- 153
- Published applications
- 87
- Assignees
- 66
- Inventors
- 231
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 4 | 0 |
| 1983 | 1 | 0 |
| 1984 | 5 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 5 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 7 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 2 |
| 2007 | 2 | 3 |
| 2008 | 1 | 1 |
| 2009 | 2 | 2 |
| 2010 | 2 | 1 |
| 2011 | 0 | 3 |
| 2012 | 1 | 5 |
| 2013 | 3 | 3 |
| 2014 | 4 | 3 |
| 2015 | 2 | 1 |
| 2016 | 5 | 8 |
| 2017 | 5 | 3 |
| 2018 | 6 | 3 |
| 2019 | 3 | 5 |
| 2020 | 6 | 4 |
| 2021 | 8 | 14 |
| 2022 | 3 | 6 |
| 2023 | 12 | 7 |
| 2024 | 6 | 6 |
| 2025 | 4 | 2 |
| 2026 | 5 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Charge separating apparatus1 Sep 2026US 12,723,857 B2Hanwha Aerospace Co., Ltd.
- Muzzleloader power cell with primer25 Aug 2026US 12,716,683 B2
- Caliber and feed-side convertible firearm14 Jul 2026US 12,680,771 B1Ares Defense Systems, Inc.
- Automatic weapon subsystem selecting target, ID target, fire19 May 2026US 12,631,428 B2Advanced Weapons Systems, Inc.
- Ammunition convertible firearm20 Jan 2026US 12,529,535 B2Ares Defense Systems, Inc.
- Ammunition convertible firearm16 Jul 2026US 2026/0202154 A1Ares Defense Systems, Inc.
- Charge separating apparatus2 Jul 2026US 2026/0185810 A1Hanwha Aerospace Co., Ltd.
- Firearm for use with ordnance of varying lengths12 Mar 2026US 2026/0071834 A1O. F. Mossberg & Sons, Inc.
- Belt-Fed Rotary Gun18 Dec 2025US 2025/0383171 A1Tippmann Industrial Products, Inc.
- Muzzleloader power cell with primer5 Jun 2025US 2025/0180324 A1Federal Cartridge Company
Most cited
By later US patents
- Machine gun with belt and magazine feed61US 5,117,735 AThe State of Israel, Ministry of Defence, Israel Military Industries · 1992
- Drum magazine51US 4,658,700 ABeta Corporation · 1987
- Convertible, belt/clip-fed automatic gun with positive shell casing ejection50US 4,942,802 AARES, Inc. · 1990
- Tubular magazine firearm with sheet metal receiver44US 9,534,861 B1Kel-Tec CNC Industries, Inc. · 2017
- Compressed gas weapon34US 5,565,642 AMayer & Grammelspacher DIANAWERK · 1996