File:Pat465971.png
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 16:37, 22 October 2018 | ![]() | 750 × 599 (15 KB) | Wiki LIC | {{Information |description={{US patent|465971}} |date={{before|1900}} |source= |author= |permission= |other versions= }} |
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