- All sections
- E - Fixed constructions
- E01B - Permanent waypermanent-way toolsmachines for making railways of all kinds
- E01B 9/20 - Fastening on wooden or concrete sleepers or on masonry without clamp members by keys
Patent holdings for IPC class E01B 9/20
Total number of patents in this class: 1
10-year publication summary
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
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|---|---|---|
| Voestalpine Railway Systems Nortrak LLC | 40 |
1 |
| Other owners | 0 |