B43L 9/007
Circular curve-drawing or like instruments: with perforated or marked rulers
Official title: {with perforated or marked rulers}
B43L9/007 (Circular curve-drawing or like instruments: with perforated or marked rulers) appears on 36 US grants and 18 published applications in this corpus.
Search patents in B43L- Granted patents
- 36
- Published applications
- 18
- Assignees
- 11
- Inventors
- 49
- Latest grant
- 19 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 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 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 3 | 0 |
| 2006 | 1 | 2 |
| 2007 | 2 | 3 |
| 2008 | 2 | 1 |
| 2009 | 0 | 1 |
| 2010 | 2 | 3 |
| 2011 | 2 | 2 |
| 2012 | 1 | 1 |
| 2013 | 2 | 0 |
| 2014 | 3 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- System and method for circle and curve drawing template19 Aug 2025US 12,391,061 B2
- Framing square7 Sep 2021US 11,110,739 B2Milwaukee Electric Tool Corporation
- Circle marking device19 Aug 2014US 8,806,766 B1
- Circle making tool22 Jul 2014US 8,782,912 B1Speedy Circle Manufacturing LLC
- Segmented measuring assembly and method of use22 Jul 2014US 8,782,914 B1
- Multifunctional geometry tool23 Oct 2025US 2025/0326246 A1
- System and method for circle and curve drawing template9 Feb 2023US 2023/0043698 A1
- Framing Square31 Oct 2019US 2019/0329586 A1Milwaukee Electric Tool Corporation
- Combined set of interacting instruments5 Apr 2012US 2012/0079729 A1
- Straight edge circle tool8 Dec 2011US 2011/0296700 A1
Most cited
By later US patents
- Multi-function layout square with laser48US 6,839,974 B12005
- Hinged measuring and marking device28US 8,074,368 B22011
- Instruments for drawing circles25US 5,615,485 ASafe-T Products, Inc. · 1997
- Multi-purpose tool22US 7,299,560 B2Topline Innovarions, LLC · 2007
- Protected pivot adjustable scaled compasses20US 4,267,638 A1981