F22B 21/18
Involving two or more upper drums and a single lower drum
Official title: involving two or more upper drums and a single lower drum
F22B21/18 (Involving two or more upper drums and a single lower drum) appears on 2 US grants and 2 published applications in this corpus.
Search patents in F22B- Granted patents
- 2
- Published applications
- 2
- Assignees
- 2
- Inventors
- 5
- Latest grant
- 27 Jun 2023
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| Year | Granted patents | Published applications |
|---|---|---|
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
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