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Priority to JP17036278UpriorityCriticalpatent/JPS5923811Y2/ja
Priority to US06/102,366prioritypatent/US4316697A/en
Priority to DE19792949974prioritypatent/DE2949974A1/de
Priority to CA000341764Aprioritypatent/CA1121313A/en
Publication of JPS5588457UpublicationCriticalpatent/JPS5588457U/ja
Application grantedgrantedCritical
Publication of JPS5923811Y2publicationCriticalpatent/JPS5923811Y2/ja