F41A 9/62
Having means for indicating the number of cartridges left in the magazine
Official title: having means for indicating the number of cartridges left in the magazine, e.g. last-round indicators (last-round safeties F41A17/40)
F41A9/62 (Having means for indicating the number of cartridges left in the magazine) appears on 144 US grants and 131 published applications in this corpus.
Search patents in F41A- Granted patents
- 144
- Published applications
- 131
- Assignees
- 58
- Inventors
- 209
- Latest grant
- 27 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 4 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 6 | 0 |
| 1997 | 4 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 2 |
| 2007 | 1 | 0 |
| 2008 | 0 | 3 |
| 2009 | 1 | 2 |
| 2010 | 1 | 5 |
| 2011 | 2 | 6 |
| 2012 | 5 | 5 |
| 2013 | 4 | 3 |
| 2014 | 4 | 7 |
| 2015 | 8 | 7 |
| 2016 | 8 | 13 |
| 2017 | 11 | 9 |
| 2018 | 7 | 9 |
| 2019 | 9 | 5 |
| 2020 | 8 | 10 |
| 2021 | 7 | 6 |
| 2022 | 6 | 7 |
| 2023 | 5 | 9 |
| 2024 | 6 | 7 |
| 2025 | 11 | 7 |
| 2026 | 1 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Determination of round count by hall switch encoding27 Jan 2026US 12,535,283 B2Magpul Industries Corp.
- Modular ammunition counter7 Oct 2025US 12,437,179 B2Laminar Engineering LLC
- Magazine capacity tracking system16 Sep 2025US 12,416,461 B1
- Firearm ammunition availability detection system12 Aug 2025US 12,385,705 B2Maztech Industries, LLC
- Magazine ammunition rounds detection and alert module8 Jul 2025US 12,352,520 B2
- Tracking and monitoring resource usage by subjects20 Aug 2026US 2026/0245000 A1LifeLens Technologies, LLC
- Firearm Ammunition Counting System With Calibration Electronics and Visual Audible and Haptic Display Methods25 Jun 2026US 2026/0177335 A1
- Determination of round count by hall switch encoding30 Apr 2026US 2026/0118080 A1Magpul Industries Corp.
- Magazine floorplate assembly with a tactile round-count indicator26 Mar 2026US 2026/0085902 A1Division Group, LLC
- Magazine Ammunition Rounds Detection and Alert Module12 Mar 2026US 2026/0071835 A1
Most cited
By later US patents