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Application filedfiledCritical
Priority to JP11481181UpriorityCriticalpatent/JPS5820517U/ja
Priority to CA000406110Aprioritypatent/CA1188819A/en
Priority to DE8282105777Tprioritypatent/DE3278666D1/de
Priority to EP82105777Aprioritypatent/EP0068494B1/en
Priority to US06/393,767prioritypatent/US4499522A/en
Priority to KR2019820005129Uprioritypatent/KR860001641Y1/ko
Publication of JPS5820517UpublicationCriticalpatent/JPS5820517U/ja
Application grantedgrantedCritical
Publication of JPS6225866Y2publicationCriticalpatent/JPS6225866Y2/ja