- All sections
- G - Physics
- G04C - Electromechanical clocks or watches
- G04C 21/12 - Indicating the time of the day by electro-acoustic means
Patent holdings for IPC class G04C 21/12
Total number of patents in this class: 8
10-year publication summary
|
2
|
1
|
0
|
1
|
0
|
1
|
0
|
0
|
0
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Lutron Technology Company LLC | 2434 |
6 |
| ETA SA Manufacture Horlogere Suisse | 668 |
1 |
| Manufacture D'horlogerie Audemars Piguet SA | 65 |
1 |
| Other owners | 0 |