File:US Patent 8447X figures.png
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DescriptionUS Patent 8447X figures.png | US Patent 8447X: seed planter | |||
Date | ||||
Source | [1] | |||
Author | Henry Blair | |||
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current | 13:23, 6 November 2007 | 954 × 714 (168 KB) | John Vandenberg (talk | contribs) | {{Information |Description=US Patent 8447X: seed planter |Source=[http://inventors.about.com/od/blackinventors/a/Henry_Blair.htm] |Date=October 14, 1834 |Author=Henry Blair |Permission={{PD-US-Patent}} |other_versions= }} |
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