E21D 15/45
Having closed fluid system
Official title: having closed fluid system, e.g. with built-in pumps or accumulators
E21D15/45 (Having closed fluid system) appears on 2 US grants and 2 published applications in this corpus.
Search patents in E21D- Granted patents
- 2
- Published applications
- 2
- Assignees
- 2
- Inventors
- 5
- Latest grant
- 26 Jul 2022
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| 2020 | 0 | 1 |
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| 2022 | 1 | 0 |
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