File:Patent, Mechanical Fan, 1830.png
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Patent drawing of Fan Moved by Mechanism, 11/27/1830. The original drawing for this patent was destroyed by a fire in the Patent Office in 1836. The coverage date is the original patent date. This drawing is a restoration created in 1837 or shortly thereafter. Source.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 14:37, 22 July 2005 | | 1,200 × 981 (849 KB) | commons>Norm~commonswiki | Patent drawing of Fan Moved by Mechanism, 11/27/1830. The original drawing for this patent was destroyed by a fire in the Patent Office in 1836. The coverage date is the original patent date. This drawing is a restoration created in 1837 or shortly there |
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