发明名称 Fixed cutter bit and blade for a fixed cutter bit and methods for making the same
摘要 A blade, which is useful on a tool that impinges earth strata, that has a blade body with a leading surface. The blade body has a first portion defining at least a part of the leading surface and a second portion. The first portion is made of a first material composition and the second portion is made of a second material composition.
申请公布号 US7926597(B2) 申请公布日期 2011.04.19
申请号 US20070804779 申请日期 2007.05.21
申请人 KENNAMETAL INC. 发明人 MAJAGI SHIVANAND I.;BITLER JONATHAN W.
分类号 E21B10/00 主分类号 E21B10/00
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