E21C 27/01
Machines which completely free the mineral from the seam: specially adapted for
Official title: specially adapted for removing overhanging coal
E21C27/01 (Machines which completely free the mineral from the seam: specially adapted for) appears on 2 US grants and 1 published applications in this corpus.
Search patents in E21C- Granted patents
- 2
- Published applications
- 1
- Assignees
- 1
- Inventors
- 3
- Latest grant
- 25 Apr 1995
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| Year | Granted patents | Published applications |
|---|---|---|
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 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 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
By publication year. Applications have been published since 2001.
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