- All sections
- E - Fixed constructions
- E21D - Shaftstunnelsgallerieslarge underground chambers
- E21D 15/36 - Telescopic props with parts held relatively to each other by friction or gripping, e.g. using wedges by a tiltable collar surrounding one or both parts
Patent holdings for IPC class E21D 15/36
Total number of patents in this class: 0
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
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This class
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| Other owners | 0 |