US Patent
Patent No. US 08667384
Published on Mar 4, 2014
Application No. 11/746270
Filed on May 9, 2007
Priority Date -
Inventor/Applicants
3Brown, Michael S. - Kitchener, CA
Klassen, Gerhard D. - Waterloo, CA
Dent, Terrill - Waterloo, CA
Classification
International:2
G06F 17/21
G06K 9/18;
National:8
715/230
715/232;
715/233;
715/705;
715/711;
715/856;
382/282;
382/307;
Field of Search 10
715/200
715/230;
715/232;
715/233;
715/282;
715/705;
715/711;
715/856;
382/282;
382/307;
Examiner
2Hong, Stephen
Tsui, Wilson