File:Tube Box Comparison After the 1920 RCA Lawsuit against Cunningham.jpg

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English: After the RCA lawsuit against Elmer Cunningham in 1920, RCA supplied the tubes and cartons. Cunningham was allowed to use a new trademark and his own artwork but done by RCA.
Date
Source From my collection of tubes
Author Engradio

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Engradio at English Wikipedia, the copyright holder of this work, hereby publishes it under the following licenses:
GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.
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The original description page was here. All following user names refer to en.wikipedia.
Date/Time Dimensions User Comment
2013-02-12 03:59 3872×2592× (3138367 bytes) Engradio Uploading a self-made file using [[Wikipedia:File_Upload_Wizard|File Upload Wizard]]

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current13:39, 28 September 2017Thumbnail for version as of 13:39, 28 September 20173,872 × 2,592 (2.99 MB)Drahtlos (talk | contribs)Transferred from en.wikipedia

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