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Priority claimed from US07/266,714external-prioritypatent/US4960735A/en
Application filed by Kennametal IncfiledCriticalKennametal Inc
Priority claimed from EP89912858Aexternal-prioritypatent/EP0441877B1/de
Application grantedgrantedCritical
Publication of ATE97602T1publicationCriticalpatent/ATE97602T1/de