File:Vacuum Tube G1 SEM Image.jpg
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![File:Vacuum Tube G1 SEM Image.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/d/dd/Vacuum_Tube_G1_SEM_Image.jpg/600px-Vacuum_Tube_G1_SEM_Image.jpg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 09:39, 15 September 2020 | ![]() | 800 × 800 (407 KB) | commons>Lbochtler | Cross-wiki upload from en.wikipedia.org |
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