- All sections
- A - Human necessities
- A41H - Appliances or methods for making clothes, e.g. for dress-making or for tailoring, not otherwise provided for
- A41H 23/00 - Devices for applying chalkSharpening or holding chalk
Patent holdings for IPC class A41H 23/00
Total number of patents in this class: 2
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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0
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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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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Dpg USA Inc. | 59 |
1 |
| Taicang Fansheng Electronic Technology Co., Ltd. | 5 |
1 |
| Other owners | 0 |