- All sections
- E - Fixed constructions
- E21C - Mining or quarrying
- E21C 41/16 - Methods of underground miningLayouts therefor
Patent holdings for IPC class E21C 41/16
Total number of patents in this class: 223
10-year publication summary
|
10
|
12
|
9
|
17
|
14
|
7
|
16
|
8
|
9
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |