File:Edison-831269-a.gif
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Edison's first drawing for storage battery electrode plate patent (831269).
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 14:55, 12 July 2011 | | 842 × 883 (26 KB) | Ron Broberg (talk | contribs) | Edison's first drawing for storage battery electrode plate patent (831269). |
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