A61G 3/068
In combination with folding stairs
Official title: {in combination with folding stairs}
A61G3/068 (In combination with folding stairs) appears on 45 US grants and 4 published applications in this corpus.
Search patents in A61G- Granted patents
- 45
- Published applications
- 4
- Assignees
- 20
- Inventors
- 55
- Latest grant
- 30 Jun 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 5 | 0 |
| 1978 | 7 | 0 |
| 1979 | 4 | 0 |
| 1980 | 1 | 0 |
| 1981 | 4 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 2 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 0 |
| 2020 | 2 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Mountable elevator30 Jun 2020US 10,695,238 B2
- Ramp and vehicle ramp device7 Jan 2020US 10,524,969 B2Toyota Jidosha Kabushiki Kaisha
- Passenger lift with passenger sensitive moveable barrier10 Mar 2009US 7,500,818 B1Lift-U, Division of Hogan Mfg., Inc.
- Rider oriented and operator oriented improvements in tow trucks10 Jul 2001US 6,257,823 B1
- Vehicular wheelchair step lift16 May 2000US 6,062,805 ARicon Corporation
Most cited
By later US patents
- Automatic lift assembly99US 4,164,292 AKarphen Lift Company · 1979
- Safety barrier/ramp actuating mechanism for wheelchair lifts91US 5,439,342 AAll American Transit Parts · 1995
- Passenger vehicle access stair and elevator apparatus67US 4,058,228 A1977
- Wheelchair lift56US 4,251,179 ATransportation Design & Technology, Inc. · 1981
- Wheelchair lift53US 4,081,091 ATransportation Design & Technology, Inc. · 1978