- All sections
- B - Performing operationstransporting
- B61F - Rail vehicle suspensions, e.g. underframes, bogies or arrangements of wheel axlesrail vehicles for use on tracks of different widthpreventing derailing of rail vehicleswheel guards, obstruction removers or the like for rail vehicles
- B61F 1/04 - Underframes of triangulated type
Patent holdings for IPC class B61F 1/04
Total number of patents in this class: 3
10-year publication summary
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0
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0
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3
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0
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0
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0
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0
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0
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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 Qingdao Sifang Co., Ltd. | 398 |
1 |
| Custom Truck & Equipment LLC | 8 |
1 |
| CRRC Industrial Institute Co., Ltd. | 3 |
1 |
| Other owners | 0 |