File:Three GE amplidynes 1951.jpg
Three_GE_amplidynes_1951.jpg (413 × 288 pixels, file size: 20 KB, MIME type: image/jpeg)
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Summary
editDescriptionThree GE amplidynes 1951.jpg |
English: Three amplidynes made by General Electric Co., from an advertisement in a 1951 magazine.
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Date | |
Source | Retrieved from Electronics magazine, McGraw-Hill Publishing Co., New York, Vol. 24, No. 2, February 1951, p. 138 on http://www.americanradiohistory.com/ |
Author | Unknown authorUnknown author |
Permission (Reusing this file) |
This image is from an advertisement without a copyright notice published in a 1951 US magazine. In the United States, advertisements published in collective works (magazines and newspapers) are not covered by the copyright notice for the entire collective work. (See U.S. Copyright Office Circular 3, "Copyright Notice", page 3, "Contributions to Collective Works".) Since the advertisement was published before 1978 without a copyright notice, it falls into the public domain. |
Licensing
editPublic domainPublic domainfalsefalse |
This work is in the public domain in the United States because it was published in the United States between 1929 and 1977, inclusive, without a copyright notice. For further explanation, see Commons:Hirtle chart as well as a detailed definition of "publication" for public art. 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 (50 p.m.a.), Mainland China (50 p.m.a., not Hong Kong or Macao), Germany (70 p.m.a.), Mexico (100 p.m.a.), Switzerland (70 p.m.a.), and other countries with individual treaties.
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current | 16:33, 10 November 2015 | 413 × 288 (20 KB) | Chetvorno (talk | contribs) | User created page with UploadWizard |
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