B63H 21/04
Relating to positive-displacement steam engines
Official title: relating to positive-displacement steam engines
B63H21/04 (Relating to positive-displacement steam engines) appears on 1 US grants and 1 published applications in this corpus.
Search patents in B63H- Granted patents
- 1
- Published applications
- 1
- Assignees
- 1
- Inventors
- 1
- Latest grant
- 14 Nov 2017
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| Year | Granted patents | Published applications |
|---|---|---|
| 2017 | 1 | 1 |
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