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Priority to JP10048886UpriorityCriticalpatent/JPH0637407Y2/ja
Priority to DE3721556Aprioritypatent/DE3721556C2/de
Priority to DE8717159Uprioritypatent/DE8717159U1/de
Priority to US07/068,224prioritypatent/US4766451A/en
Priority to GB8715330Aprioritypatent/GB2192069B/en
Publication of JPS636434UpublicationCriticalpatent/JPS636434U/ja
Application grantedgrantedCritical
Publication of JPH0637407Y2publicationCriticalpatent/JPH0637407Y2/ja