US Patent 7495639 Driving method of light emitting diode
Patent 7495639 was granted and assigned to Holtek Semiconductor Inc. on February, 2009 by the United States Patent and Trademark Office.
Is a
Current Assignee
Date Filed
April 1, 2005
Date of Patent
February 24, 2009
Patent Application Number
11095578
Patent Jurisdiction
Patent Number
Patent Primary Examiner
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