E21D 15/581
In which the props are pre- loaded
Official title: {in which the props are pre- loaded (extensible elements at strut extremities E21D15/52)}
E21D15/581 (In which the props are pre- loaded) 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
- 3
- Latest grant
- 23 Feb 2016
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
By publication year.
Subgroups
Granted patents
Recent patents
Most cited
By later US patents