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Priority to JP9848573UpriorityCriticalpatent/JPS5044125U/ja
Priority to GB1763974Aprioritypatent/GB1473345A/en
Priority to US463210Aprioritypatent/US3904975A/en
Priority to DE19742420502prioritypatent/DE2420502A1/de
Publication of JPS5044125UpublicationCriticalpatent/JPS5044125U/ja