- All sections
- E - Fixed constructions
- E21C - Mining or quarrying
- E21C 31/06 - Driving means incorporated in machines for slitting or completely freeing the mineral from the seam for cutting or breaking-down devices actuated by an endless cable or chain
Patent holdings for IPC class E21C 31/06
Total number of patents in this class: 9
10-year publication summary
|
0
|
5
|
0
|
3
|
1
|
0
|
0
|
0
|
0
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Joy Global Underground Mining LLC | 348 |
9 |
| Other owners | 0 |