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Priority to JP18027484UpriorityCriticalpatent/JPH0219350Y2/ja
Priority to GB08528775Aprioritypatent/GB2167729B/en
Priority to CA000496105Aprioritypatent/CA1251171A/en
Priority to US06/801,338prioritypatent/US4692086A/en
Publication of JPS6194486UpublicationCriticalpatent/JPS6194486U/ja
Application grantedgrantedCritical
Publication of JPH0219350Y2publicationCriticalpatent/JPH0219350Y2/ja
