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İzah detail from 'Whirligig'; U.S. patent #59745, 1866 (first U.S. yo-yo patent)
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James L. Haven

Later versions were uploaded by Berkut at .

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The original description page was . All following user names refer to en.wikipedia.
  • 2004-12-05 09:15 Berkut 395×669×8 (24654 bytes) cleanup
  • 2004-05-15 21:02 Popefauvexxiii 395×669×8 (33913 bytes) detail from 'Whirligig'; U.S. patent #59745, 1866 (first U.S. yo-yo patent) {{msg:PD}}

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