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Expired Canadian patentCanada

Setting instance breakpoints in object oriented computer programs

CA 2211505 C · Owner: Wulkan, Mike · Inventors: Olshefski, David Paul; Wulkan, Mike; Carmichael, Ian Hugh

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 mechanism for setting a conditional breakpoint on all methods called by a specific instance of a class. To set the instance breakpoint, the debugger must first determine all of the methods that can be applied to the object type or class. In an environment in which full debugging information includes the correspondence between virtual function tables and specific classes and full class hierarchy, information, the methods can be located by locating the pointer to the type's virtual function table and, from the virtual function table, locating the specific class in the debugging information. Identifying the specific type permits all of the base classes of the type to be identified in the …

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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 July 25, 1997 and granted February 5, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 25, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 25, 2019.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 25, 1997
GrantedFebruary 5, 2002
Term endedJuly 25, 2017
Patent numberCA 2211505 C
Classification (IPC)G06F9/44 +2 more

Timeline

Timeline From CIPO dates

1998200020022004200620082010201220142016Application filedJuly 25, 1997Patent grantedFeb 5, 2002Term endedJuly 25, 2017

Sources & verification

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