- All sections
- E - Fixed constructions
- E04F - Finishing work on buildings, e.g. stairs, floors
- E04F 21/28 - Implements for finishing work on buildings for glazing
Patent holdings for IPC class E04F 21/28
Total number of patents in this class: 5
10-year publication summary
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0
|
0
|
1
|
0
|
1
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0
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2
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0
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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
|
|---|---|---|
| Vitro Flat Glass LLC | 467 |
2 |
| Cardinal IG Company | 153 |
1 |
| STOUFFVILLE Glass Inc. | 2 |
1 |
| Industrias Peygran, S.L. | 14 |
1 |
| Other owners | 0 |