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Priority to JP8712887UpriorityCriticalpatent/JPH0546082Y2/ja
Priority to US07/200,975prioritypatent/US4926958A/en
Priority to CA000568480Aprioritypatent/CA1310388C/en
Publication of JPS63195401UpublicationCriticalpatent/JPS63195401U/ja
Application grantedgrantedCritical
Publication of JPH0546082Y2publicationCriticalpatent/JPH0546082Y2/ja