US Patent 9728048 Matched symbol upgrade slot game
Patent 9728048 was granted and assigned to IGT on August, 2017 by the United States Patent and Trademark Office.
Is a
Current Assignee
Date Filed
September 20, 2013
Date of Patent
August 8, 2017
Patent Applicant
Patent Application Number
14033274
Patent Jurisdiction
Patent Number
Patent Primary Examiner
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