File:Mignon battery - case.jpg
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 21:27, 12 March 2011 | 730 × 832 (84 KB) | Spinningspark | {{Information |Description=Left: Pulvermacher's chain fitted in a case. Right: the bottom of the case is used to store electrolyte and the device can be hinged down to soak in it. |Source=US patent US9571 |Date=1st February 1853 (issued) |Author=I. L. Pul |
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