Aztec Code (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Aztec Code" in English language version.

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adams1.com

espacenet.com

worldwide.espacenet.com

  • *US 5591956, Longacre, Jr., Andrew & Hussey, Robert, "Two Dimensional Data Encoding Structure and Symbology for use with Optical Readers", published 1997-01-07 

eta.st

recog.ru

uspto.gov

patft.uspto.gov

  • Official Gazette. United States Patent Office. 17 June 1997. Hereby dedicates to the public the entire term of said patent. Click "images" then "correction" to see the dedication to the public domain.

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