- All sections
- G - Physics
- G01L - Measuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure
- G01L 21/24 - Vacuum gauges by measuring variation of frictional resistance of gases using rotating membersVacuum gauges of the Langmuir type
Patent holdings for IPC class G01L 21/24
Total number of patents in this class: 4
10-year publication summary
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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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2
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
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|---|---|---|
| Ph-instruments GmbH | 4 |
3 |
| Beihang University | 548 |
1 |
| Other owners | 0 |