US Patent 7352121 Spark plug
Patent 7352121 was granted and assigned to NGK SPARK PLUG CO on April, 2008 by the United States Patent and Trademark Office.
Is a
Current Assignee
Date Filed
September 24, 2004
Date of Patent
April 1, 2008
Patent Application Number
10948140
Patent Jurisdiction
Patent Number
Patent Primary Examiner
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