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Priority to JP7426170ApriorityCriticalpatent/JPS4831593B1/ja
Priority to GB1816571Aprioritypatent/GB1352172A/en
Priority to DE19712166990prioritypatent/DE2166990C2/de
Priority to CA115,789Aprioritypatent/CA945874A/en
Publication of JPS4831593B1publicationCriticalpatent/JPS4831593B1/ja