- All sections
- E - Fixed constructions
- E02D - Foundationsexcavationsembankmentsunderground or underwater structures
- E02D 19/20 - Restraining of underground water by damming or interrupting the passage of underground water by displacing the water, e.g. by compressed air
Patent holdings for IPC class E02D 19/20
Total number of patents in this class: 1
10-year publication summary
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| WSP Global Inc. | 33 |
1 |
| Other owners | 0 |