File:Tungsram MR-X radio transmitter tube for audio communication (1917).png
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Summary
| Description |
English: Tungsram MR-X radio transmitter tube for audio communication (1917) |
| Date | |
| Source | http://www.holux.hu/publikaciok/A_Tungsram_marka_tortenete.pdf |
| Author | This photo was shot in 1917 by the TUNGSRAM Company |
Licensing
|
This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer. This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929. |
| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 09:18, 4 May 2019 | | 629 × 659 (347 KB) | Draguler | User created page with UploadWizard |
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