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File:Ed Fredkin working on PDP-1.jpg

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Summary

Description
English: Ed Fredkin working on PDP-1. This work is in the public domain because it was published in the United States between 1924 and 1963 and although there may or may not have been a copyright notice, the copyright was not renewed.
Date circa 1960
date QS:P,+1960-00-00T00:00:00Z/9,P1480,Q5727902
Source Computer History Museum
Author Unknown photographer

Licensing

Public domain
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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current18:42, 15 May 2019Thumbnail for version as of 18:42, 15 May 2019800 × 826 (67 KB)DaderotUser created page with UploadWizard

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