E04G 21/1808
Holders for bricklayers' lines, bricklayers' bars
Official title: {Holders for bricklayers' lines, bricklayers' bars; Sloping braces (cord-line chalkers B44D3/38)}
E04G21/1808 (Holders for bricklayers' lines, bricklayers' bars) appears on 108 US grants and 68 published applications in this corpus.
Search patents in E04G- Granted patents
- 108
- Published applications
- 68
- Assignees
- 19
- Inventors
- 157
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 4 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 5 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 6 | 0 |
| 1991 | 5 | 0 |
| 1992 | 5 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 5 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 4 | 1 |
| 2003 | 3 | 1 |
| 2004 | 1 | 2 |
| 2005 | 4 | 2 |
| 2006 | 0 | 3 |
| 2007 | 2 | 6 |
| 2008 | 2 | 8 |
| 2009 | 5 | 4 |
| 2010 | 4 | 0 |
| 2011 | 2 | 3 |
| 2012 | 3 | 6 |
| 2013 | 1 | 1 |
| 2014 | 2 | 3 |
| 2015 | 0 | 2 |
| 2016 | 0 | 4 |
| 2017 | 2 | 1 |
| 2018 | 3 | 2 |
| 2019 | 2 | 4 |
| 2020 | 2 | 2 |
| 2021 | 0 | 1 |
| 2022 | 3 | 1 |
| 2023 | 0 | 6 |
| 2024 | 2 | 2 |
| 2025 | 0 | 2 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- System and method for building layout18 Aug 2026US 12,709,906 B2UpRight, Inc.
- Tool and system for manipulating a string line and line marking method30 Jun 2026US 12,668,983 B1
- System and method for round column construction18 Jun 2024US 12,012,768 B2OceanLink USA, Inc.
- Adjustable batter board16 Jan 2024US 11,873,653 B1
- Device for connecting and separating masonry units29 Nov 2022US 11,512,482 B2S.I.C., Inc.
- Systems and methods for staking a corner for construction5 Feb 2026US 2026/0035939 A1
- Method and apparatus for securing a profile5 Jun 2025US 2025/0179818 A1Brickwork Tools Limited
- Indicia-coded spacing guide line and corresponding method16 Jan 2025US 2025/0019987 A1
- Laszlo stud leveler12 Sep 2024US 2024/0301705 A1
- Builders profiling tool15 Feb 2024US 2024/0052654 A1
Most cited
By later US patents
- Safety support structure88US 5,056,753 A1991
- Building construction measuring tape80US 4,149,320 A1979
- Assembly for the temporary attachment of a vertical masonry guide to the inner leaf of a cavity wall39US 8,511,041 B2Profileset B.V. · 2013
- Construction layout block26US 6,578,274 B12003
- Apparatus for and a method of providing a reference point or line25US 6,594,910 B22003