F04F 9/02
Diffusion pumps: of multi-stage type
Official title: of multi-stage type
F04F9/02 (Diffusion pumps: of multi-stage type) appears on 1 US grants and 3 published applications in this corpus.
Search patents in F04F- Granted patents
- 1
- Published applications
- 3
- Assignees
- 2
- Inventors
- 9
- Latest grant
- 7 Dec 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2019 | 0 | 2 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
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