DescriptionSATNET, Peter Kirstein report to DARPA, 1977.jpg
English: Diagram from the University College London ARPANET Project, Annual Report 1977, by Professor Peter T. Kirstein, April 1978. US Department of Defense Distribution Statement A - Approved for Public Release - Distribution Unlimited. This work is not protected by copyright, as it was published in the U.S. between 1924 and 1978 but without copyright notice.
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.
The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
http://creativecommons.org/publicdomain/zero/1.0/deed.enCC0Creative Commons Zero, Public Domain Dedicationfalsefalse
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