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Priority claimed from US06/936,851external-prioritypatent/US4728396A/en
Application filed by Beloit CorpfiledCriticalBeloit Corp
Publication of FI890839A0publicationCriticalpatent/FI890839A0/fi
Publication of FI890839ApublicationCriticalpatent/FI890839A/fi
Publication of FI88185BpublicationCriticalpatent/FI88185B/fi
Application grantedgrantedCritical
Publication of FI88185CpublicationCriticalpatent/FI88185C/fi