H01J 21/22
With movable electrode or electrodes
Official title: with movable electrode or electrodes
H01J21/22 (With movable electrode or electrodes) appears on 2 US grants and 2 published applications in this corpus.
Search patents in H01J- Granted patents
- 2
- Published applications
- 2
- Assignees
- 3
- Inventors
- 7
- Latest grant
- 13 Jul 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2014 | 0 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 1 | 0 |
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