- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 61/74 - Lamps with low-pressure unconstricted discharge having a main light-emitting filling of difficult vaporisable metal vapour, e.g. sodium
Patent holdings for IPC class H01J 61/74
Total number of patents in this class: 1
10-year publication summary
2
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2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
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Heilongjiang Longtai Environmental Protection Technology Development Co.,Ltd. | 1 |
1 |
Other owners | 0 |