Revision history of "File:Fig07-KeithEricksonUSPno597062 1898.png"

Diff selection: Mark the radio boxes of the revisions to compare and hit enter or the button at the bottom.
Legend: (cur) = difference with latest revision, (prev) = difference with preceding revision, m = minor edit.

  • (cur | prev) 16:41, 12 April 2013Administrator7 (talk | contribs). . (149 bytes) (+149). . (First page of figures for Alexander E. Keith and John and Charles J. Erickson’s U.S. patent no. 597,062 for the dial phone, issued 11 January 1898. -> Creation failed: Unsupported filetype!)