US Patent 7121004 Method of fabricating security door
Patent 7121004 was granted and assigned to Columbia Manufacturing Inc. on October, 2006 by the United States Patent and Trademark Office.
Is a
Current Assignee
Date Filed
June 3, 1999
Date of Patent
October 17, 2006
Patent Application Number
09325311
Patent Jurisdiction
Patent Number
Patent Primary Examiner
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