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Priority to JP16418983UpriorityCriticalpatent/JPS6071052U/ja
Priority to DE3437901Aprioritypatent/DE3437901C2/de
Priority to US06/662,890prioritypatent/US4636598A/en
Publication of JPS6071052UpublicationCriticalpatent/JPS6071052U/ja
Priority to US06/784,468prioritypatent/US4800244A/en
Application grantedgrantedCritical
Publication of JPS642359Y2publicationCriticalpatent/JPS642359Y2/ja