- All sections
- H - Electricity
- H04M - Telephonic communication
- H04M 1/2749 - Automatic dialling or redialling systems, e.g. on off-hook or redial on busy
Patent holdings for IPC class H04M 1/2749
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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1
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1
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3
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0
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3
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0
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1
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| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Samsung Electronics Co., Ltd. | 131630 |
1 |
| International Business Machines Corporation | 60644 |
1 |
| Dora AB | 1 |
1 |
| Other owners | 0 |