- All sections
- H - Electricity
- H04L - Transmission of digital information, e.g. telegraphic communication
- H04L 12/62 - Manual relay systems, e.g. push-button switching with perforated tape storage
Patent holdings for IPC class H04L 12/62
Total number of patents in this class: 3
10-year publication summary
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0
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0
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0
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0
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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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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sony Corporation | 30481 |
1 |
| Cisco Technology, Inc. | 22240 |
1 |
| Nippon Telegraph and Telephone Corporation | 16247 |
1 |
| Other owners | 0 |