- All sections
- H - Electricity
- H04Q - Selecting
- H04Q 5/18 - Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange with indirect connection, i.e. through subordinate switching centre
Patent holdings for IPC class H04Q 5/18
Total number of patents in this class: 4
10-year publication summary
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0
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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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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Vizicall, LLC, DBA MyDoctorCalls | 2 |
2 |
| Panasonic Corporation | 20059 |
1 |
| Matrics2, Inc. | 18 |
1 |
| Other owners | 0 |