- All sections
- H - Electricity
- H04Q - Selecting
- H04Q 3/555 - Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised using wired logic circuitry being comprised by electro-magnetic devices
Patent holdings for IPC class H04Q 3/555
Total number of patents in this class: 0
10-year publication summary
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
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| Other owners | 0 |