E21C 37/26
Chisels or other cutting tools not mentioned before
E21C37/26 (Chisels or other cutting tools not mentioned before) appears on 3 US grants and 3 published applications in this corpus.
Search patents in E21C- Granted patents
- 3
- Published applications
- 3
- Assignees
- 3
- Inventors
- 8
- Latest grant
- 9 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2017 | 0 | 1 |
| 2018 | 0 | 1 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 1 |
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