- All sections
- B - Performing operationstransporting
- B61L - Guiding railway trafficensuring the safety of railway traffic
- B61L 3/04 - Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control controlling mechanically
Patent holdings for IPC class B61L 3/04
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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1
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0
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1
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0
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0
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1
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0
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0
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hafco Foundry and Machine Company, Incorporated | 4 |
1 |
| Schenck Process Europe GmbH | 84 |
1 |
| GE Global Sourcing LLC | 904 |
1 |
| Other owners | 0 |