E04F 21/1811
With hand-driven crank systems
Official title: {with hand-driven crank systems, e.g. rope, cable or chain winding or rack-and-pinion mechanisms (E04F21/1816, E04F21/1822 and E04F21/1827 take precedence)}
E04F21/1811 (With hand-driven crank systems) appears on 30 US grants and 22 published applications in this corpus.
Search patents in E04F- Granted patents
- 30
- Published applications
- 22
- Assignees
- 13
- Inventors
- 48
- Latest grant
- 5 Nov 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 1 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 2 | 1 |
| 2005 | 0 | 2 |
| 2006 | 2 | 2 |
| 2007 | 0 | 0 |
| 2008 | 0 | 3 |
| 2009 | 1 | 1 |
| 2010 | 2 | 1 |
| 2011 | 1 | 0 |
| 2012 | 1 | 0 |
| 2013 | 1 | 3 |
| 2014 | 3 | 1 |
| 2015 | 0 | 1 |
| 2016 | 2 | 0 |
| 2017 | 1 | 2 |
| 2018 | 0 | 0 |
| 2019 | 1 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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- Lifting mechanism for an apparatus for lifting construction plates, lifting apparatus comprising this mechanism, and lifting method using this apparatus23 Nov 2017US 2017/0334691 A1Etablissements Pierre Grehal Et Cie SA
- Universal screw-driving machine support for a plate-lifting tool, tool equipped with this support, and implementation method23 Nov 2017US 2017/0335579 A1Etablissements Pierre Grehal Et Cie SA
Most cited
By later US patents