File:The Experimenter March 1925 cover - Oudin coil.jpg
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Summary[edit]
| Description |
English: Cover of the March 1925 issue of the Hugo Gernsback science magazine The Experimenter, showing electrotherapy using a homemade Oudin coil. |
| Date | |
| Source | Retrieved February 23, 2015 from http://www.magazineart.org/main.php/v/technical/experimenter/Experimenter1925-03.jpg.html. Originally from The Experimenter magazine, Experimenter Publishing Co., March 1925, cover. |
| Author | Unknown author |
| Permission (Reusing this file) |
This 1925 issue of The Experimenter magazine would have the copyright renewed in 1953. Online page scans of the Catalog of Copyright Entries, published by the US Copyright Office can be found here. Search of the Renewals for Periodicals for 1952, 1953, and 1954 show no renewal entries for The Experimenter. Therefore the copyright was not renewed and it is in the public domain. |
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This work is in the public domain because it was published in the United States between 1929 and 1963, and although there may or may not have been a copyright notice, the copyright was not renewed. For further explanation, see Commons:Hirtle chart and the copyright renewal logs. Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (70 years p.m.a.), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 14:40, 25 March 2015 | | 650 × 918 (116 KB) | Chetvorno (talk | contribs) | User created page with UploadWizard |
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