- All sections
- H - Electricity
- H02K - Dynamo-electric machines
- H02K 31/04 - Acyclic motors or generators, i.e. DC machines having drum or disc armatures with continuous current collectors with at least one liquid-contact collector
Patent holdings for IPC class H02K 31/04
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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|---|---|---|
| Aktiebolaget SKF | 2882 |
1 |
| Other owners | 0 |