75211486
Dec 11, 1996
Nov 3, 1998
power operated diamond drilling tools and parts, namely, core bits, reaming shells, casing shoes, locking couplings, water swivels, core barrel parts, core springs, core lifter cases, subs and adapters, adapter couplings, diamond plate core springs, rod shoes, stop rings, landing rings, stabilizers, clinometers, and measuring gauges
Machinery