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Priority to JP687474ApriorityCriticalpatent/JPS5546433B2/ja
Priority to CA217,519Aprioritypatent/CA1055794A/en
Priority to GB87075Aprioritypatent/GB1472391A/en
Publication of JPS50101429ApublicationCriticalpatent/JPS50101429A/ja
Publication of JPS5546433B2publicationCriticalpatent/JPS5546433B2/ja
Priority to US06/514,851prioritypatent/US4511624A/en