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Expired Canadian patentCanada

Method and apparatus for testing the print quality of printed texts, more particularly banknotes

CA 1084166 A · Owner: Gretag Aktiengesellschaft · Inventors: Huber, Ernst; Mast, Fred; Huber, Josef A.

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Abstract From the Canadian patent

Method and apparatus for testing the print quality of printed texts, more particularly banknotes Abstract of the Disclosure, A method and apparatus for detecting printing faults or errors in a sample of printed material such, as a bank note, by determining the relative positions of corresponding text on the sample and each of a number of original bank notes, each having been printed by a different printing process used in printing the sample combining the text of the originals optically or electronically taking into account the positions of the text in the originals relative to the text on the sample resulting from superimposition of the text produced by each of the printing process used to …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted August 19, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 19, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 29, 1977
GrantedAugust 19, 1980
Term endedAugust 19, 1997
Patent numberCA 1084166 A
Classification (IPC)G06K5/00 +2 more

Timeline

Timeline From CIPO dates

1978198019821984198619881990199219941996Application filedApril 29, 1977Patent grantedAug 19, 1980Term endedAug 19, 1997

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.