File:19th century knowledge mechanisms foot power small grinder.jpg
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Summary
| Description |
English: 19th century knowledge mechanisms foot power small grinder |
| Date | |
| Source | Turning and mechanical manipulation |
| Author | Charles Holtzapffel, John J. (John Jacob). Holtzapffel |
Licensing
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This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 03:58, 10 December 2009 | | 553 × 729 (50 KB) | Jonp154 | {{Information |Description={{en|1=19th century knowledge mechanisms foot power small grinder}} |Source=Turning and mechanical manipulation |Author=Charles Holtzapffel, John J. (John Jacob). Holtzapffel |Date=1850 |Permission= |other_versions= }} |
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