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Priority to JP8201181ApriorityCriticalpatent/JPS57196937A/ja
Priority to US06/373,102prioritypatent/US4469283A/en
Priority to GB8213226Aprioritypatent/GB2099721B/en
Priority to CA000403934Aprioritypatent/CA1176220A/en
Publication of JPS57196937ApublicationCriticalpatent/JPS57196937A/ja
Publication of JPS6359692B2publicationCriticalpatent/JPS6359692B2/ja