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Expired Canadian patentCanada

Extensible object previewer in a shell browser

CA 2426472 C · Owner: Kurtz, James Brian · Inventors: Devorchik, David George; Hally, Judson Craig; Beam, Tyler Kien

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A system and method for extending the functionality of an object previewer in a shell browser to improve the user experience. The shell browser provides an extensibility mechanism so that third party developers can extend the functionality of the default previewer for particular file types. A graphical user interface includes a control which enables a user to select a previewer for displayed files from a plurality of available previewers. Alternatively the shell browser can automatically select a previewer from a plurality of available previewers. A data structure contains information indicative of the availability of multiple previewers in a shell browser.

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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

  • Filed April 23, 2003 and granted June 10, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 23, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 23, 2025.
  • 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 23, 2003
GrantedJune 10, 2014
Term endedApril 23, 2023
Patent numberCA 2426472 C
Classification (IPC)G06F3/14

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedApril 23, 2003Patent grantedJune 10, 2014Term endedApril 23, 2023

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