- All sections
- H - Electricity
- H04Q - Selecting
- H04Q 3/54 - Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised
Patent holdings for IPC class H04Q 3/54
Total number of patents in this class: 5
10-year publication summary
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1
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1
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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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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
|
|---|---|---|
| NEC Corporation | 36475 |
2 |
| Tridonic GmbH & Co KG | 1026 |
1 |
| Telefonaktiebolaget LM Ericsson (publ) | 28564 |
1 |
| Current Lighting Solutions, LLC f/k/a GE Lighting Solutions, LLC | 387 |
1 |
| Other owners | 0 |