Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
February 3, 2009
Patent Application Number
11646761
Date Filed
December 27, 2006
Patent Citations Received
Patent Primary Examiner
Patent abstract
An apparatus for drilling holes in a substrate wherein a mandrel is anchored to the substrate. A hollow drill bit rotates about the mandrel via a drive motor and is a guided along a length of the mandrel.
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