Boring or penetrating the earth – Bit or bit element – Specific or diverse material
Reexamination Certificate
2005-11-08
2005-11-08
Thompson, Kenneth (Department: 3672)
Boring or penetrating the earth
Bit or bit element
Specific or diverse material
Reexamination Certificate
active
06962218
ABSTRACT:
Cutting elements having a non-planar substrate interface surface including a band and an ultra hard material layer over the interface surface are provided. Also provided are earth boring bits incorporating such cutting elements.
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Christie Parker & Hale LLP
Smith International Inc.
Thompson Kenneth
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