Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
August 9, 2011
Patent Application Number
12051769
Date Filed
March 19, 2008
Patent Primary Examiner
Patent abstract
A substrate-supporting device has a top surface for placing a substrate thereon composed of a plurality of surfaces separated from each other and defined by a continuous concavity being in gas communication with at least one through-hole passing through the substrate-supporting device in its thickness direction. The continuous concavity is adapted to allow gas to flow in the continuous concavity and through the through-hole under a substrate placed on the top surface.
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