- All sections
- G - Physics
- G04C - Electromechanical clocks or watches
- G04C 21/14 - Electro-acoustic time announcement, i.e. spoken
Patent holdings for IPC class G04C 21/14
Total number of patents in this class: 0
10-year publication summary
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0
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0
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2
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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
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This class
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|---|---|---|
| Other owners | 0 |