E21D 15/56
Details of locks of telescopic props
E21D15/56 (Details of locks of telescopic props) appears on 4 US grants and 2 published applications in this corpus.
Search patents in E21D- Granted patents
- 4
- Published applications
- 2
- Assignees
- 4
- Inventors
- 10
- Latest grant
- 20 Aug 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Sleeve holder for a hydraulic cylinder20 Aug 2019US 10,385,888 B2Caterpillar Global Mining Europe GmbH
- Device for roof support of underground mine/tunnel23 Feb 2016US 9,267,375 B2Council of Scientific and Industrial Research
- Continuously adjustable rescue strut28 May 2002US 6,394,405 B1Para Tech Incorporated
- Support column for use in a mine16 Jan 1996US 5,484,130 ABochumer Eisenhutte Heintzmann GmbH & Co. KG
Most cited
By later US patents