- All sections
- H - Electricity
- H04Q - Selecting
- H04Q 3/12 - Circuit arrangements for receivers of routing digits for line selectors providing transfer of routing digits
Patent holdings for IPC class H04Q 3/12
Total number of patents in this class: 3
10-year publication summary
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| International Business Machines Corporation | 61906 |
1 |
| IBM United Kingdom Limited | 4127 |
1 |
| IBM (China) Investment Co Ltd | 2062 |
1 |
| Other owners | 0 |