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Summary
DescriptionBell telephone magazine (1922) (14569580647).jpg |
English: One of the first microwave relay systems in the US, a 5 GHz link built by AT&T's manufacturing arm Western Electric in 1946 using military technology that provided telephone service 22 miles between Los Angeles and Catalina island off the coast of California. This is the Los Angeles end, two parabolic dishes one for transmitting and one for receiving. From "Bell Laboratories' Role in Victory" in Bell Telephone magazine, summer 1946, p. 123 Identifier: bellvol25telephonemag00amerrich (find matches) |
Date | |
Source |
https://www.flickr.com/photos/internetarchivebookimages/14569580647/ |
Author | Internet Archive Book Images |
Permission (Reusing this file) |
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Flickr posted date InfoField | 27 July 2014 |
Licensing
This image was taken from Flickr's The Commons. The uploading organization may have various reasons for determining that no known copyright restrictions exist, such as: No known copyright restrictionsNo restrictionshttps://www.flickr.com/commons/usage/false
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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. العربية ∙ беларуская (тарашкевіца) ∙ čeština ∙ Deutsch ∙ Ελληνικά ∙ English ∙ español ∙ français ∙ Bahasa Indonesia ∙ italiano ∙ 日本語 ∙ 한국어 ∙ македонски ∙ Nederlands ∙ português ∙ русский ∙ sicilianu ∙ slovenščina ∙ ไทย ∙ Tiếng Việt ∙ 中文(简体) ∙ 中文(繁體) ∙ +/− |
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This image was originally posted to Flickr by Internet Archive Book Images at https://flickr.com/photos/126377022@N07/14569580647. It was reviewed on 18 September 2015 by FlickreviewR and was confirmed to be licensed under the terms of the No known copyright restrictions. |
18 September 2015
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image/jpeg
4802ce5bb79a9df689ff8ee0a328281549368804
1,089,331 byte
1,268 pixel
2,070 pixel
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 03:55, 18 September 2015 | ![]() | 2,070 × 1,268 (1.04 MB) | Fæ | == {{int:filedesc}} == {{subst:chc}} {{information |description={{en|1=<br> '''Identifier''': bellvol25telephonemag00amerrich ([https://commons.wikimedia.org/w/index.php?title=Special%3ASearch&profile=default&fulltext=Search&search=insource%3A%2Fbellvo... |