F41G 1/44
Spirit-level adjusting means
Official title: Spirit-level adjusting means, e.g. for correcting tilt; {Means for indicating or correcting tilt or cant}
F41G1/44 (Spirit-level adjusting means) appears on 121 US grants and 121 published applications in this corpus.
Search patents in F41G- Granted patents
- 121
- Published applications
- 121
- Assignees
- 66
- Inventors
- 196
- Latest grant
- 18 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 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 1 |
| 2005 | 1 | 2 |
| 2006 | 0 | 3 |
| 2007 | 3 | 8 |
| 2008 | 2 | 1 |
| 2009 | 2 | 3 |
| 2010 | 4 | 5 |
| 2011 | 5 | 3 |
| 2012 | 4 | 2 |
| 2013 | 2 | 2 |
| 2014 | 5 | 7 |
| 2015 | 9 | 6 |
| 2016 | 8 | 12 |
| 2017 | 7 | 11 |
| 2018 | 7 | 3 |
| 2019 | 12 | 9 |
| 2020 | 8 | 8 |
| 2021 | 9 | 9 |
| 2022 | 3 | 7 |
| 2023 | 5 | 3 |
| 2024 | 8 | 7 |
| 2025 | 5 | 4 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Turret with a zero stop18 Aug 2026US 12,710,249 B2Sheltered Wings, Inc.
- Optical system with cant indication17 Feb 2026US 12,553,688 B2Sig Sauer, Inc.
- Illuminated sighting system21 Oct 2025US 12,449,234 B2HiViz Group, Inc.
- Weapon anti-cant indicator8 Jul 2025US 12,352,531 B2AOB Products Company
- Firearm mount15 Apr 2025US 12,276,528 B2WHG Properties, LLC
- Optical system with cant indication27 Aug 2026US 2026/0251425 A1Sig Sauer, Inc.
- Anti-cant indication system for shooting devices4 Jun 2026US 2026/0153307 A1
- Illuminated Sighting System12 Feb 2026US 2026/0043636 A1HiViz Group, Inc.
- Bow sight leveling device8 Jan 2026US 2026/0009620 A1
- Firearm mount30 Oct 2025US 2025/0334405 A1WHG Properties, LLC
Most cited
By later US patents
- Tilt indicator for firearms83US 6,978,569 B2Long-Shot Products, Ltd. · 2005
- Firearm leveling device82US 5,406,733 A1995
- Telescopic sight with level indicator81US 5,223,650 A1993
- Vertical position indicator for optical sights64US 5,657,571 A1997
- Digital vertical level indicator for improving the aim of projectile launching devices63US 7,296,358 B12007