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Application filedfiledCritical
Priority to JP12049583UpriorityCriticalpatent/JPS6027025U/ja
Priority to CA000459692Aprioritypatent/CA1215914A/en
Priority to US06/634,137prioritypatent/US4609313A/en
Publication of JPS6027025UpublicationCriticalpatent/JPS6027025U/ja
Application grantedgrantedCritical
Publication of JPS6346374Y2publicationCriticalpatent/JPS6346374Y2/ja