- All sections
- B - Performing operationstransporting
- B61G - Couplings specially adapted for railway vehiclesdraught or buffing appliances specially adapted for railway vehicles
- B61G 3/30 - Couplings comprising mating parts of similar shape or form which can be coupled without the use of any additional element or elements with coupling heads rigidly connected by pins having locking noses which are brought into locking position by rotating the pins
Patent holdings for IPC class B61G 3/30
Total number of patents in this class: 2
10-year publication summary
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| CRRC Qiqihar Rolling Stock Co., Ltd. | 115 |
1 |
| CRRC Mudanjiang Jinyuan Casting Co., Ltd. | 3 |
1 |
| Other owners | 0 |