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Priority claimed from CA000430117Aexternal-prioritypatent/CA1208023A/en
Priority claimed from CA000430108Aexternal-prioritypatent/CA1210935A/en
Application filed by Universal Skate Sharpeners LtdfiledCriticalUniversal Skate Sharpeners Ltd
Priority claimed from EP19840105970external-prioritypatent/EP0128430B1/en
Application grantedgrantedCritical
Publication of ATE36461T1publicationCriticalpatent/ATE36461T1/en