File:Patent, Mechanical Fan, 1830.png
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Size of this preview: 733 × 599 pixels. Other resolutions: 294 × 240 pixels | 587 × 480 pixels | 940 × 768 pixels | 1,200 × 981 pixels.
Original file (1,200 × 981 pixels, file size: 849 KB, MIME type: image/png)
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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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