File:Fig07-KeithEricksonUSPno597062 1898.png
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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.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 16:41, 12 April 2013 | | 1,708 × 2,850 (445 KB) | Administrator7 (talk | contribs) | 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. |
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