E21D 17/01
Caps for supporting mine roofs: characterised by the shape of the cap
Official title: characterised by the shape of the cap, e.g. of specified cross-section
E21D17/01 (Caps for supporting mine roofs: characterised by the shape of the cap) appears on 1 US grants and 2 published applications in this corpus.
Search patents in E21D- Granted patents
- 1
- Published applications
- 2
- Assignees
- 2
- Inventors
- 4
- Latest grant
- 31 Jul 2018
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 0 |
By publication year.
Recent patents
Most cited
By later US patents