File talk:US6281.png

Source
Seems to qualify as PD expired, since it appears to have been published on 10 April 1849... -- 76.65.128.252 (talk) 14:28, 31 August 2012 (UTC)
 * Seems to be from a US Patent Office patent, #6281, from one Walter Hunt, see -- 76.65.128.252 (talk) 14:31, 31 August 2012 (UTC)