Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
William Christopher Duffy0
Date of Patent
March 27, 2007
Patent Application Number
10705967
Date Filed
November 13, 2003
Patent Citations Received
Patent Primary Examiner
Patent abstract
A duct system comprising duct sections which are factory manufactured and field modifiable. The field modifiable duct system comprises fire resistant materials and is fire-rated. The duct sections when assembled create a continuous conduit that allows air to flow from a fresh air source to the required area of the building.
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