File:Tungsram H2 radio transmitter tube 1916.jpg
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Tungsram_H2_radio_transmitter_tube_1916.jpg (288 × 480 pixels, file size: 19 KB, MIME type: image/jpeg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 12:44, 3 May 2019 | 288 × 480 (19 KB) | commons>Draguler | User created page with UploadWizard |
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