Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
William G. Meyers0
Date of Patent
January 9, 2007
Patent Application Number
11103876
Date Filed
April 12, 2005
Patent Citations Received
Patent Primary Examiner
Patent abstract
A manhole system including a cover, a frame receiving the cover and at least one security device securing the cover to the frame.
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