Difference between revisions of "File:Seesaw figure.png"

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(diagram from patent "Seesaw and ironing-board." US 800434 A)
 
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Latest revision as of 03:36, 19 December 2014

diagram from patent "Seesaw and ironing-board." US 800434 A

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current03:36, 19 December 2014Thumbnail for version as of 03:36, 19 December 20142,379 × 1,416 (77 KB)Chfoo (talk | contribs)diagram from patent "Seesaw and ironing-board." US 800434 A

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