File:Evans Valve.png
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| Description |
English: A diagram of a rotary steam valve from the French edition of the Abortion of the Young Steam Engineer's Guide, 1820 |
| Date | |
| Source | The Abortion of the Young Steam Engineer's Guide |
| Author | Oliver Evans |
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This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 100 years or fewer.  You must also include a United States public domain tag to indicate why this work is in the public domain in the United States.
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| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 15:10, 6 April 2014 | | 929 × 853 (639 KB) | Unus Multorum (talk | contribs) | User created page with UploadWizard |
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