E21D 15/002
Auxiliary devices in which the prop type is not essential
Official title: {Auxiliary devices in which the prop type is not essential (setting or withdrawing props or chocks E21D15/58, E21D15/60)}
E21D15/002 (Auxiliary devices in which the prop type is not essential) appears on 2 US grants and 1 published applications in this corpus.
Search patents in E21D- Granted patents
- 2
- Published applications
- 1
- Assignees
- 2
- Inventors
- 6
- Latest grant
- 2 Sep 2003
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| Year | Granted patents | Published applications |
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| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
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| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
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| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
By publication year. Applications have been published since 2001.
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