Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
February 4, 2014
Patent Application Number
13165593
Date Filed
June 21, 2011
Patent Citations Received
Patent Primary Examiner
Patent abstract
In one aspect of the present invention, an external tubular member comprises an external outside surface and an external inside surface joined by an external wall thickness. The external wall thickness comprises external sintered polycrystalline diamond. An internal member comprises an internal outside surface and an internal width. The internal width comprises internal sintered polycrystalline diamond. The external inside surface is adjacent to the internal outside surface.
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