File:Lee de Forest american inventor.png

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Lee_de_Forest_american_inventor.png(456 × 557 像素,檔案大細:391 KB ,MIME類型:image/png

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Svenska: Lee de Forest (amerikan) 1873 - 1961. Uppfinnare av 3-elektrodröret.
日期 未知日期
Unknown date
來源 https://digitaltmuseum.se/021018293424/lee-de-forest-amerikan-1873-1961-uppfinnare-av-3-elektrodroret
作者 Unknown authorUnknown author
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The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.

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現時2019年4月22號 (一) 17:19響2019年4月22號 (一) 17:19嘅縮圖版本456 × 557(391 KB)Caztorp{{Information |description={{sv|Lee de Forest (amerikan) 1873 - 1961. Uppfinnare av 3-elektrodröret.}} |source=https://digitaltmuseum.se/021018293424/lee-de-forest-amerikan-1873-1961-uppfinnare-av-3-elektrodroret |Date={{other date|?}} |Author={{unknown|Author}} |Permission={{cc-zero}} |other versions= }} Category:Lee De Forest Category:Collections of the Tekniska museet

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