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Application filed by American National Carbide CompfiledCriticalAmerican National Carbide Comp
Priority to FI892349ApriorityCriticalpatent/FI93385C/fi
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Publication of FI93385BpublicationCriticalpatent/FI93385B/fi
Publication of FI93385CpublicationCriticalpatent/FI93385C/fi
Effect of Electrospark Coatings on the Cutting Properties of Twist Drills[Previously Titled: Influence of Electric-Spark Coatings on the Cutting Properties of Twist Drills.]